The Backwards Bicycle Will Break Your Brain

I found out this the hard way the first time I rode a three wheel bicycle. In order to turn a three wheeler you have to be going slow enough for the front wheel to be usable. You don't do what I did and lean and expect the bike to turn. You just tip the whole bike over by leaning. I finally did fix my cognitive bias and get the three wheeler to work. I pretty much hated the thing.
http://littlegreenfootballs.com/article/44629_The_Backwards_Bicycle_Will_Break_Your_Brain#rss-sm