Searching for tire opinions... but came across this thread. Who can resist?
Worst car would be a toss up between my '78 Volaré and my '91 BMW 318i. The Volaré was the worst handling, steering, braking, driving car I've ever been in and the BMW was a nickel and diming piece of sh*t. In it's defense, I think it had been parked for a few years before I bought it and never quite recovered from that.
Best car, Xfire aside, probably goes to my '94 Ford Probe. 150,000 trouble free miles and it was decently fun to drive. Only dislike: it was that early '90's teal blue colour. I sold it for no particular reason and the guy who bought it totaled it two days later.