Avsnitt 4

Brock Vanleer is back, and out for revenge. After filling the top of the Motorsphere with vaporized atomic fuel, he threatens to blow up the spectator-filled arena unless Flyer steps forward in exchange for their lives. The noble Flyer of course does so, but Vanleer has no intention of disarming his ticking timebomb, as his plan is for vengence against all of Team Fastex . While Flyer faces the daunting motor-enhanced strength of Vanleer's exo-skeleton, Charger, Stunts, and Spitfire have to figure out a way to climb and vent the Motorsphere while dodging bullets from Vanleer's henchmen and helicopter gunships.