Young kids in classic cars...what do you do?

One of my fondest childhood road trip memories was lying on the package tray of my parents car looking at the night time stars through the rear window as we were heading up to the Sierras for a camping/fishing trip. Another is sitting on my dad's lap "steering" the car while he worked the pedals (and made sure the steering was correct with his hand on the steering wheel down low where I couldn't see it.
I must have been about 5 years old.
How did we ever survive our parents outrageous parenting skills?