Fly Digi Kai's awesome Mech Jet in the 5 Billion Speedway Race to win one of the precious Key-Tanas and escape Prime Empire. Transform the powerful mech with digi swords into a jet and fire the stud shooters! But beware of Richie of the Rat Pack, as he is chasing Digi Kai on his hoverboard and is determined to defeat him. Can you shake him off and win the race?