It had to do with the difference between the way a wagon steers and a car steers. In a car, the front axle stays in the same place and the wheels pivot on either side of the axle. In a wagon, the axle itself pivots around a central point. This works ...
Looking at your avatar, I thought you preferred Jammie Dodgers to Wagon Wheels. lol
Let me guess paddy and muphy were blondes?! HAHA good one a star for you hun!!