hmmm, where do i start. Ok, i was going up an onramp to get onto the highway and the car made a wierd rattling noise underneath. Then i stopped at a red light, put the car into gear, the light turned green, then the engine reved and i had no forward motion. I can go through the gears without pushing the clutch in. I need to know whether this is the transmission or the clutch. im kinda pissed off right now since this happened about 30 minutes ago, someone please help me?