Something strange happened last week. I got in my new 06 MO and put it in R- shift to back up. The car wouldn't budge an inch. I checked to see if any obstacles was holding it back. It seeemed everthing was clear and there were no obstacles in the way of it. So I decided to step on the gas a bit and suddenly there was a snapping sound somewhere at the back underneath. I got out again and double checked...nope nothing at all. After that there was no touble at all driving it. Everything seemed ok to me. Before I take it for the first service and report it, I was wandering if any of you had such experience or any insight to this.