For what it's worth, sitting doesn't hurt a car. It doesn't get depressed and want to end it all. That said, where it sits does hurt a car. Parked in tall grass, under a tree, out on the street, or in that marshy spot out behind the garage...not good! Now, parked in a well ventilated garage with the proper mouse proofing in place and driven from time to time with the proper maintenance? No problem! I've been doing it with a whole assortment of vehicles for over thirty years and I haven't had any problems or concerns yet. So, be not afraid of the dreaded idle car for the only thing to fear is the occasional rough idle!