Once, I got a 24' moving truck with my car towed behind it stuck on the hilly, icy entrance to a KFC in Iowa City in December, while moving from Denver to Chicago. I couldn't get up the hill, but also could not back the approximately 45-50' total rig up, as it was into several lanes of traffic. Foot on the brake for survival.
An Iowa City cop came along and blocked traffic with his squad car for me. I still wasn't able to get the rental truck to do what I wanted, so the cop hopped in the cab to try and was attacked by my cat. Finally we got the truck off the hill, but I never got the KFC after all that.
I'm both praising the cops and Iowa City so he was a nice dude.