When others have to drive my car. Such as yesterday when I took my car for an emmissions test here in Ohio. Great place, top techs but still a smudge inside and some surface scratches at the rear hatch area. Obvious someone leaned on it or had to rub on it. I of course washed it ,removed the scrathes, polished and waxed the area of concern. Just more work. I did let my lifetime buddy drive it when I moved last fall. Hes a original Datsun guy from long ago. I trust him along with my buddy who has a 2001 Corvette with 8k miles. Anyone who has a good car i feel no problem with. It just the strangers.