What's the weirdest car you have ever owned, driven or ridden in? Only cars you have personal experience with count.
For me, it was either one friend's Citroen 2CV or another's 1961 Saab 96, which had a 2-stroke engine that could be induced to run backwards, giving 1 speed forward and 3 in reverse. It had a three-on-the-tree shifter.