Finally got some ice here in Memphis. I estimate the ice to be about a quarter to half inch thick. The avalanche performed so well, I had to put the rock aside and bring back the Heartbeat of Chevy. There's a hill at the end of my street that was covered with ice. There's a stop sign on the top of the hill. Out of 4 or 5 cars only one made it to the top. But since they had to stop at the stop sign, they too had to slide back down the hill. All were front wheel drive cars except one. I started to turn around, but that would've made me late for work. So I went up the hill and stopped next to the car on the hill that could not even go an inch forward. I waved at them, looked both ways and then took off. I've have always wondered if I should've gotten the Z71 even if I don't go off road, just for the ice. Today erased all questions. The Z66 is all you need if you don't go off road.