The 24 Hour Challenge

American Industrial Film. A Pontiac and a competitor are put to a 24-hour speed test on a racetrack to see which fares better. American Industrial Film. A Pontiac and a competitor are put to a 24-hour speed test on a racetrack to see which fares better. American Industrial Film. A Pontiac and a competitor are put to a 24-hour speed test on a racetrack to see which fares better. American Industrial Film. A Pontiac and a competitor are put to a 24-hour speed test on a racetrack to see which fares better.