Fold the rear view mirrors in, that way they lose whatever time they think they gained. If all pedestrians carried a carton of eggs, NYC would have a better driving culture.

— Chris Anderson (@jchris) September 5, 2019

Better yet is to carry a few shards of ceramic from a spark plug. Much harder than glass, and even casually tossed at a car window will easily and quickly shatter it. Takes hardly any force at all. Eggs just mean the car gets wiped off, with little damage done.

Ceramic shattering the front or rear window, though, means minimum $150 repair and if it’s the front windshield, the car in undriveable.