[Racer26]

You may wish to be careful with this design. You must put BUMPERS on, and the Q&A has implied that invertible ROBOTs, that intend to continue playing while inverted, must have their BUMPERS in the BUMPER ZONE even when inverted. This means, barring some crazy design I can't fully wrap my head around at the moment, your robot must be ~26" tall, and therefore unable to traverse the TUNNELs.