Automotive: Trucks And Tires Pass Rigid Tests The newest gimmick in tires - the one which won't spill you even at ninety miles is demonstrated on the Indianapolis speedway. CU Wilbur Shaw driving and weaving in a convertible at 80 mph he gets a blow-out on the drivers side of the car. MCU Wilbur and the car traveling at a good pace and when a nail penetrates the casing of the tire. Pliable rubber surrounds the puncture and keeps you rolling until you can change the tire.