When my wife and I were dating we would play volleyball leagues with our female roomate. We would drive together since it didn't make sence for us to take seperate cars. She knew we were pretty wild in bed because her room was right next to ours. She often told us she could hear our sesions through the thin walls of our apartment.
Anyway, one evening we were driving home after volleyball my wife and I ended up in the backseat together. We just couldn't wait to get home so she climbed on top of me while I laid down in the back seat. Our room mate continued to drive down the hwy while we tested out the shock absorbers. We noticed she needed to adjust the rear view mirror. Whether it was to get a better view of the road or us we don't know.