About Centaur Maxximus Motion
Mission Statement
Centaur Maxximus Motion, Inc., optimizes the motion in America's future. We focus on every aspect of America's transport needs and encompass fuels all along the entire performance range.
David Bruce McMahan

Dr. David Bruce McMahan is the President and Chief Executive Officer of the Centaur Performance Group of Companies.
Centaur Performance Group is an alternative asset manager, who for over 16 years has provided innovative, performance focused, investment solutions with disciplined risk management. The firm specializes in credit, relative value and niche energy strategies. Centaur’s energy team allocates investment capital to private, continental U.S. based, oil and natural gas assets and the production of American energy resources. Recently, Hedge Week named Centaur’s credit strategy as the Best Credit Fund of 2009. Centaur is headquartered on Fisher Island, FL, with affiliate offices in Bermuda and Rancho Santa Fe, California.
As Co-Founder and Chairman of the National Cristina Foundation (NCF), McMahan leads a non-profit organization with more than more than seven hundred worldwide affiliations. Its mission is to support the international development of technology applications for people with special needs. The Foundation originated the concept of technology reuse in 1983 and specializes in redistributing computers and other electronic hardware from corporations and individuals who have outgrown the technology and making them available to those in need.
The National Cristina Foundation has a strong commitment to our combat heroes. The organization believes that providing important training opportunities for America’s wounded warriors who have put themselves in harms way to safeguard our nation, is a critical priority. Through the Foundation’s work with veteran support groups around the country, we are committed to helping wounded warriors gain access to important IT skills. Such support provides a significant contribution toward assisting transitioning service members and veterans who have made personal sacrifices for all of us, speed their productive integration back into civilian life.
McMahan’s long commitment on behalf of the disabled includes serving on President Reagan’s National Advisory Board on Technology and The Disabled, Chairman of Maryland Governor William Schaefer's Chief Executive Officer Council on Employment of the Disabled and as Chairman, Securities Industry Fund Raising for AHRC (Association For the Help of Retarded Children, New York Chapter). His fund raising efforts were among the most successful ever conducted by the AHRC.
For his many charitable efforts, McMahan has received international recognition. He was the second American to be awarded a distinguished Honorary Professorship by the University of International Business and Economics, Beijing. The Maryland State Board of Education passed a resolution recognizing his generous support and continuous commitment to disabled persons in the State of Maryland. McMahan was also honored as Humanitarian of the Year from the Maryland Rehabilitation Association and has received the Maryland Governor’s Corporate Sponsorship Award. Nita Lowe (D., NY) sponsored a congressional resolution to honor McMahan’s work on behalf of the disabled.
McMahan began his professional career in finance in 1961, trading convertible securities and then moved on to manage private investment portfolios in Southern California. He was Managing Director of Genesis, SA, a European- based investment group specializing in convertible securities management on behalf of Swiss and American investors. In 1975, McMahan created the National Institutional Options Department at Paine Webber, Inc., and went on to head the Institutional and Retail Options Sales Department at Bear Stearns & Co. where he became a Partner. From 1980 through March of 2011 he was General Partner of McMahan Securities Co. L.P.
As National Association of Securities Dealers licensed Principal, McMahan is a Securities and Exchange Commission registered Broker-Dealer.
McMahan graduated from the University of Southern California in 1960 and, in 1992, earned his Ph.D. in Labor Economics from The Union Institute.
Marlon Kirby
Designer & Driver Maxximus G-Force, the Maxximus LNG and the Maxximus Prodigy

Marlon Kirby has years of experience building hot rods and high performance engines for a variety of clients. One of his specialties is building stock spec Ultima GTR’s.
While working a side job as a chauffeur, he met philanthropist and businessman Dr. David B. McMahan and the two discussed their love of fast cars and their shared dream of owning a one-of-a-kind car that was unique, street legal, and a record breaker. McMahan agreed to finance the building and design of the Maxximus G-Force, a project that Kirby would oversee from its inception. The two enthusiasts wondered whether the current structure of the Ultima GTR could be altered for even greater power and performance with one goal in mind; to develop the world’s fastest, street legal supercar. Maxximus Technologies was founded by Kirby in 2000, in Indianapolis.
Kirby began his designs for the Maxximus on paper, working out various problems in his mind. To transform an Ultima GTR into a Maxximus, one must press the reset button on the entire drivetrain and a good portion of the chassis. This is no easy task, requiring thousands of hours of custom fabrication because the ease of using a Porsche G-50 transmission is no longer an option. A further challenge involved moving the engine to sit in further on the chassis. This is necessary in order for the Maxximus to harness over 2,700 hp, something the stock Ultima GTR chassis and drive train are not capable of handling.
Countless hours of testing in the Aerodyne Wind Tunnel in Mooresville, NC, make it more aerodynamically stable. About a dozen people with different specializations worked on re-engineering and re-designing the car in California and Indiana over a period of two years.
Kirby’s skills as a designer paid off when he took the Maxximus G Force, the first car he designed, for a test drive on on October 7th 2008 at the Rockingham NC Raceway, breaking three world records, and then on Dec. 22, 2009 at the Palm Beach International Dragway, where he broke an additional four world records, and previously.
Kirby is now designing the Maxximus LNG 2000 and the Maxximus Prodigy.
Jeff McMahan

Jeff McMahan's first real adventure happened when he was a sophomore at the University of New Hampshire. He saw an ad in his college paper that read: Make $2000/week in Alaska. Thus started his yearning to explore roads less travelled, beginning with working in a cannery in Valdez, AK.
Years later, Jeff was Senior Executive Officer of Argent Financial Group International, the first company in the Dubai International Financial Center, U.A. E., to launch a locally domiciled hedge fund. He came across an article by a journalist taking part in the "Rickshaw Run". Little did he know 18 months later he would be competing in that very event!
Jeff’s team, Winner Winner Chicken Dinner, made the 2400 mile journey from Kathmandu, Nepal, to Pondicherry India in record time, crossing the finish line first. He and his three Phi Kappa Psi brothers were so early, there was no finish line to greet them.
Not having his fill of India, Jeff competed again the following year, from Shillong to Goa as Lucknow be 2 Ladies. This translated to thousands of miles of everything India could throw his way while he traveled in a glorified lawn mower.
For the past five years Jeff has been involved with a very different type of machine. The family business includes the Maxximus G-Force, a seven-time world record holder. The G-Force has now been converted to the Maxximus LNG 2000, which runs on natural gas. At a recent event in Las Vegas the company developing the cars, Centaur Maxximus Motion (CMX), also announced plans for a new supercar, the Prodigy, that will run purely on alternative fuel.
Raising money for charities is close to Jeff’s heart. He particularly supports Carolina For Kibera and the Susan G. Komen Breast Cancer Foundation. Jeff’s mother is ten year cancer survivor, others close to him have conquered the disease, and another friend is in the middle of this fight. This is a disease that touches many families throughout America and the World, it is a most worthy cause to raise donations and awareness for.
Jeff is currently a Director for Cornerstone Acquisition & Management, based in Rancho Santa Fe, CA, as well as Director of International Business Development at Centaur Performance Group in Greenwich CT and Maxximus Technologies in Indianapolis, Indiana. He is actively involved at Phi Kappa Psi Fraternity, currently serving as Chapter Advisor to its San Diego State Chapter.
He holds a B.A. from the University of New Hampshire, multiple P.A.D.I. certifications, and is a San Diego Chargers season ticket holder.
“Twenty years from now you will be more disappointed by the things that you didn't do than by the ones you did do. So throw off the bowlines. Sail away from the safe harbor. Catch the trade winds in your sails. Explore. Dream. Discover.” -- Mark Twain
