Which one of these are unlike the others: Toyota Supra, Mitsubishi 3000GT, Mazda RX-7, Nissan 300ZX?
All of these are iconic 90s Japanese sports cars, but the RX-7 is unique in that it has a rotary engine, as opposed to the piston engines of the other cars.
Instruction: Which one of these are unlike the others: Toyota Supra, Mitsubishi 3000GT, Mazda RX-7, Nissan 300ZX?
Context: 
Response: All of these are iconic 90s Japanese sports cars, but the RX-7 is unique in that it has a rotary engine, as opposed to the piston engines of the other cars.