Air Jammers / Space Jets
The Air Jammer line of toys were manufactured by Tomy. They were all piston driven, air pressure powered vehicles that you pumped up with a hand pump, and then let go. It actually went very fast. Good thing about it? No batteries. There were a number of different vehicles, like the Road Rammer, a motorcycle called the Air Scrammer, a Volkswagen Bug called the Bug Scrammer, and more..
Although they were rarer, you may also remember a series of robotic looking piston driven toys called Space Pets. There were models like the Fleet-Fotted Floomdorm and the Stretch-Legged Stoomdorm. You also pumped these up and they would move around.