Vic claims that he knew he wanted to build engines on 14 February 1976 while watching the Daytona 500. The Daytona 500 in 1976 was held on February 15th, not February 14th.
Set in the US but on Vic and Watts return from the police station, on the speed limit sign, it's clearly written MAXIMUM 70. It's in Km/h not in MPH. That would be faster then the 60 MPH speed limit on US highways. Not bad for a small country road.