The Pontiac AZT

K is indeed very hard to beat as the worst-looking vehicule on the road. The designers must have used a garbage-compactor truck as their source of inspiration...
Among those trailing not that far behind in the "How to look like a lunch box on wheels" are certainly the Dodge CALIBER and NITRO, the Chrysler PT CRUISER, the Chevy HHR, the Honda ELEMENT, the Toyota FJ CRUISER and the Subaru TREBECA Sorry for those who happen to own (and presumably like) one of these beasts, you have all the rights to feel insulted...
However, I have no problem with the curvy VW Beatle (besides the fact it's a Volks), specially when it comes fully equiped with a gorgeous lady at the wheel...
As for horrors from the past, without going back to the Ford Model T era, anybody remembers the infamous aquarium on wheels - the AMC Pacer?
Lion Heart