knock knock is so catchy :D
How do ambulances get through insane amounts of traffic? Like, Los Angeles/New York/Houston-Texas-at-rush-hour-gridlock-on-IH-10-with-shoulder-lanes-full-of-debris traffic? Especially with patients in critical condition who maybe weren't in critical enough condition to justify a helicopter ride. Do ambulances ever have to go off-road or hop curbs if the shoulders are too messy to drive on?