When i was driving today my car started to act funny.It would hit about 3000 rpms then act like it was boging down.Then i would be doing 50 the posted speed limit and my car was at about 1100 rpms and the pedal would feel like you had to push it down really far to get the car to move.Then when it finally moved it would shake really hard back and forth like it was getting no gas and was reving itself to 5000 rpms befor shifting.I am no car guy i have no idea what this could be but i dont want to drive it until i know it is safe to take to a repair shop.