My S/O has mentioned he would like to "break in" the backseat of our new truck. I've never had sex in a car before and I'm not opposed by any means. So basically I'm just wondering if there are any positions that are easier? And what about the clothes (or lack there of), what do you leave on/take off? Any and all tips would be greatly appreciated. I want to surprise him one day and just do it! (also, him and I are both tall, I'm 5'8 and hes 6'3, and both built slim)