U.S. manufacturers, Gibbs Sports Amphibians acquires factory to build revolutionary Quadski high speed amphibious craft. Gibbs Sports Amphibians announce the company's establishment of a 54,000 sq. ft. factory in Auburn Hills to produce the Quadski, the first High Speed Amphibian available for consumer purchase. Fifteen years in development, the GIBBS' Quadski is the first commercially available High Speed Amphibian (HSA). HSA technology is the result of award-winning engineering and more than $200 million in research and development investment.