Back in 1996/1997 time I was at the tender age of 18 and my grandparents who lived nearby me at the time had a new 97 528i. Being a college freshman who commuted in my e28, my grandparents took a month vacation. So I had the balls to use their e39 the whole damn time while they were away.
I racked up miles in that thing and when they came back, they never knew