Ep 15. Caboosters

When Genie invents the Cabooster, a caboose that provides a power boost, she gets a taste for Kay-like speed. Soon, everyone's building double, triple and quadruple Caboosters! But much speed, brings a crash and a lot of finger-pointing to poor Genius Genie. As the Great Train Race is on, on the brink of winning, she proves once more she a leader by saving some trains in danger.