Group B Rally Cars
So far we've listed race cars that have been banned to create an even playing field, but in some cases, entire classes of racing cars have been banned. Such was the fate of Group B rally cars, which weren't banned because of a competitive advantage but because of safety issues — a ban even the most ardent thrill seeker could support.
Group B rally cars could make upwards of 500 horsepower and went well over 100 mph (160 kph) [source: Barry]. That doesn't sound too concerning until you remember that Group B rally cars were raced on public roads, dirt roads and other trails in a thrilling test of speed, control and communication between driver and co-driver. Rally fans don't sit in grandstands. Rather, they line the roadway, with little protection.
Sounds like a thrilling day of racing, right? The only issue with Group B rally cars is that they kept crashing, killing drivers and spectators. The FIA, which oversees rally racing, decided that the entire Group B class was simply too dangerous and shut it down.