Here's my problem. I am an empty nester with well established,self supporting children. My wife and I have the following vehicles - 2004 Corvette, 2007 Cadillac DTS Platinum, 2005 Chevy Tahoe Z-71, 1998 Chevy CK 2500 4x4 pickup (tows boat), and a 2003 Triumph motorcycle. Yeah, 5 vehicles for...