Comment by brigandish

This only applies to night time, and trains stop early compared to many other places. Also, there are plenty of paid parking spaces for use during the day, and you’ll often find cars parked in the street, even narrow ones, with the hazard lights on like they’re a magic spell, which they are, because enforcement is close to zero. You will even see cars parked on the road next to a car park.

All in all, I don’t think there’s any relationship between Japan’s car culture, parking rules or availability, and its train system.