Clowncart

The clowncart spawns near the theatre, uses bananas as fuel and
requires a bikehorn to drive. Bananium sheets and coins can be used to
upgrade it and to unlock various features
![One of the features](https://cloud.githubusercontent.com/assets/7786335/3441893/9d0fd144-010b-11e4-9d81-23fe922cf0b2.png)