Ok so my girlfriend took the car to get some gas and as she turned left into the gas station. She told me as she turned she let off the gas and when she pressed the gas again the engine only revved up and the car started rolling backward. Before this had happened the car had absolutely no problem with shifting, slipping or shuttering so to me the car had no prior signs that the transmission would just up and quit. When I went to check the car out the fluid level was fine but the car would not shift into any gear what so ever when shifted where the drive gear would be the speedometer would just up when i revved the engine. After shifting through all the gears i put it back into park and it made a high pitched grinding noise. I don't know if the transmission is electronically controlled or if there is a fuse or relay that could have gone out. The car has around 116,000 miles so i really hope the tranny doesn't need to be rebuilt i have a kid on the way and not a lot of money to spend but if anyone has any idea what has or what could have happened please let me know. Oh i also checked the shift linkage and the cable appears to be connected properly but not sure if it could be readjusted. thanks for reading