I was 17 or 18 when I bought my first car a demo from the dealer. It was a 1965 Sunbeam Imp I paid $650 for with only a couple thousand miles on it. It was 875cc water cooled rear engine. Really strange car with large solid chunks of rubber for CV joints and 12 inch wheels.
It survived a collision with a Greyhound bus on the freeway (no injury to me - Greyhound driver had fallen asleep) and was finally totaled years later after I had sold it to an employee who fell asleep on night and crashed at 70 mph into the back of a Chevy Impala parked on an exit ramp, he got away with a couple of bruises from the seat belts. All in all a very good car.