>?It would kill the utility of cars though, you could never drive faster than maybe 30 miles per hour or you would constantly run people over. In NYC, the spee

>?It would kill the utility of cars though, you could never drive faster than maybe 30 miles per hour or you would constantly run people over. In NYC, the speed limit is 25 miles per hour. What's more, there are plans to reduce that to 20mph in a bunch of places. Moral: Don't drive in NYC.