Although it doesn’t look like it, this is a post WWII design, with an aluminum body and tubular frame. Its Standard engine’s typical flat head was modified by Harry Weslake and shared with Jaguar (his Weslake Ford V8s won Le Mans powering the seminal GT40s in the mid to late 1960s). The Triumph 1800 Roadster was the last production car with a Dickey seat (rumble seat with it’s own windscreen). It has a top speed of about 75 mph, and a four speed transmission.