The last time we featured rocketman Robert Maddox, he was test riding the thrusters on a custom drag kart out on a dry lake bed. Well, he’s back at the lakebed only this time he has a new dragon kart with a bigger rocket. This engine can produce 270-pounds of thrust, which is 2.5 times more than the last kart. For a moment, the thruster works. Then the exhaust has a massive flameout that almost cooked Maddox. Not to worry, though, he lives to ride another day…uncooked.