I just had an experience with a auto soap dispenser, sink, towels and dryer set in the same place in a public restroom, didn’t have to walk to a shared dryer
Plus if electric cars become the norm, the streets will be quiet for the first time since the industrial revolution
Bad news, tires are the biggest source of noise from cars in movement unless you change the exhaust to something barely legal on a gas car.
This is only for speeds greater than 30 mph