While driving to work this morning, my transmision suddenly failed to engage. It would not engage in any gear. Prior to this, I noticed in each gear the engine rev rate was very high (not in the red zone though) as I was accelerating in eahc gear. The car qit engaging at a stop sign and when I exited the car and lifted the hood I could smell something burnt. Ther was not noticable smoke or any other indication of a problem. Is this my whole transmission, clutch or what has happened?