today my car developed a pretty bad vibration coming from under the car. It is at its worst in 1st, 2nd, and 3rd up to about 3k. I cant feel it in the sterring wheel but I can feel it in the seat and in the shifter handle. There is also a squeak coming from under the car when I go over small bumps or the road is wavy. Could I need a tranny mount? Maybe the driveshaft is somehow bent? My jack is broke right now and I cant get under the car until I can get to a friends tomorrow. Any ideas wht this could be?