It isn’t really 30-60 minutes though. I’ve never had a charging session go over 20 minutes, which is too long to sit in the car and too short to grab more than something at the convenience store or maybe to go from a fast food restaurant. But I always charge to 80-85%.
Maybe an L2 charger at a park or mall is better for a longer term stop, since unlike an L3 charger, it takes an hour or two to make any decent progress.