Designer Alex Tremulis created the Chrysler Thunderbolt concept car during his time with coachbuilder Briggs Manufacturing Company. The distinctive Thunderbolt featured hidden headlights, a powered retractable hardtop, pushbutton door handles, and pontoon fenders that wrapped completely around the car -- including all four wheels. Five Thunderbolts were built. Chrysler toured them around the country, drawing excited crowds at every stop.