The Infinite Power Source Based Wall Driver is a taxi that is powered by an infinite power source, allowing it not only to climb walls, but to fly really fast in the air. It is unlocked by completing Master's Road.
There is no speed cap in air mode, but acceleration tends to slow significantly at around 1000 sps (111.84 mph).
Due to it's insane speed, it is better not to use it on ground.
Even if this taxi's Engine explodes, it'll still work because it's powered by an Infinite Power Source.