Hi I am a new Prius owner, just pick up a new 2010 last week. Two days ago something strange happen. I was stopped at a red light, when the light change to green I step on the gas paddle. The car was reluctant to move and just "roll" across the intersection, so I press the gas paddle harder, nothing happen to the speed but the engine was revving like crazy. It feel like as if the engine was not engaged! This last for about 10 seconds and everything went back to normal. I am wondering if anyone out there had experience the similar problem?