The 2007 Rockstar Energy Drink U.S. Open of Motocross concluded this past weekend, with Grant Langston emerging as the overall winner, collecting a whopping $100,000. Carey Hart's new SX team made its debut at the US Open. The team currently features former AX champion Josh Demuth, although Hart plans to add one more 450 rider as well as a lites rider. Demuth ended up going 6-2 for 3rd overall at the Open, stoking out Hart by getting on the poduim at Carey's team's very first event which was held in his hometown of Vegas. Open Class Overall Results 1. Grant Langston, Clermont, Fla., Yamaha, 38pts, 2-5 2. Chad Reed, Tampa, Fla., Yamaha, 38pts, 1-8 3. Josh Demuth, Keller, Texas, Honda, 37pts, 6-2 4. Jake Weimer, Rupert, Idaho, Honda, 36pts, 10-1 5. Mike Alessi, Victorville, Calif., Suzuki, 36pts, 5-3 6. Andrew Short, Smithville, Texas, Honda, 34pts, 3-7 7. Dan Reardon, Australia, Honda, 32pts, 7-4 8. Justin Brayton, Fort Dodge, Iowa, KTM, 28pts, 8-6 9. Tim Ferry, Largo, Fla.,