I do let my wife drive the Elky!
On occasion if she needs lawn and garden bulk items but on most of those occasions she makes me go along as chauffeur, and yard boy hauler & mover.
Of course I do borrow her Macan when I have large mounted prints to haul. A 40x60 fits in the back like the car was designed for it. I had to use it this Monday to deliver a project to a client. And each time I go to pick them up from our print shop.
I guess since my name is on the title it is not really borrowing "her" car. I bought my El Camino back before we were married and I have not bothered to go to get the title changed just to add her name. My will has her as the beneficiary, so it will not be a big problem if I am not around.
I have not been in an accident since 1978 when a lady ran a stop sign and hit my 914 in the door. My wife had a fender bender back in 1989. No tickets for either of us since the late 1970s.