My parents had four acres out in the country. When I was 14 (1964) my dad bought a 1940 Chevy from a friend for $25...it ran OK, and they let me drive it around our small acreage to get a feel for cars.
That '40 was the last year for running boards on Chevrolets...and it had suicide doors. I and my friends found out that to change drivers, the driver could simply open the driver's door, step out on the running board, open the back door, walk across the back and use the same process to get into the passenger seat. The new driver just slid over. Of course, we probably never got over 10 MPH while this was going on.
