This is an EXCELLENT way to see the park!!! The drivers are very knowledgeable. They stop at the different sites around the park so you can get off, walk a bit, take photos, etc. They have different length tours (Central Park really is huge!).
We had 6 in our group and we haggled with the "supervisor" selling the tours and got the price down quite a bit - and they could take 3 of us in each pedicab - which was very nice. Our 2 cabs stayed together and we had a great time.
It really was worth every penny. We will definitely be going for the longer trip if/when we get back there.