I think I'm going to try having my wife drive my old Volvo 240 for a while and see if it happens to that one. It's better for me because I'll take the benz and use it for my 27 mile commute...

__________________
86 Nissan 720 P/U - 285K miles and counting!!
91 Volvo 240 - 218K miles and still going strong.
00 Mercedes E320 - 111K miles and lovin it!!!