This thread was born to be derailed.
I often think about a Vic or a Town Car, but I think that would be a little close to the edge for my Fairmont-on-a-trailer setup. Of course, I think I read somewhere that a '93 or '94 Fleetwood could be had with a towing package that bumped its rating up to 7000 lbs.
I also think that a big, early '70s wagon needs to lead my car around on the way to the track.