I once saw a nice Vette targa (I think it's called) where you remove the top a la t-top but with no center divider.
anyways.... it was a nice vette and a sunny day and it was parked in the shopping mall.
It got dark pretty fast with storm clouds... and i could see it was gonna pour. I parked beside him and took a big blue cover thing from the trunk and covered his car, put a note on it... "good car-enthusiast samaritan... please don't throw the tarp away... left my phone #"
The guy called me back later that day to thank me for allowing him to have a nice car without ruined leather seats... and not having to wet his pants on the way home.
I got the tarp back, as well as some $ (wasn't expecting it)... and got him to come and try Auto-X