The G310 engine is very similar to a 125cc 2-stroke, especially when you try to over take someone on the road. Downshift, possibly 2-3 gears depending & rap the engine out to the limiter. It will get you past most. Once you get up to 75-80 mph, it takes awhile to get much more speed, but it will hit 90+. If you are trying to pass someone that is going fast already, you are better off just letting that go. You can easily buzz around someone going 50-65 mph downshifting 2-3 gears & hitting full RPMs.