Marcus has been a major aerodynamic figure in this sport since moving here from Formula 1 .
Marcus has been key in the development of Ford 's new NASCAR Nationwide Mustang ( set to debut at Daytona in July ) .
Marcus , who has been key in the development of Ford 's new NASCAR Nationwide Mustang ( set to debut at Daytona in July ) , has been a major aerodynamic figure in this sport since moving here from Formula 1 .