Think of an animated car fish tailing around a corner. The front wheels follow the path around the corner, while the back of the car swings away from the direction traveled around the corner, hence the car fish tails.
I would imagine this animateted car has a second path which would control the back end of the car causing the car to appear to fish tail.
I hope this illustrates what I'm after when I say object follows 2 paths.
Thanks.