Car not accelerating

I went and got my brakes inspected, the brakes were fine. Needed an alignment. Everything was fine so I got on the highway car would not accelerate, it took awhile. It did not pick up then you get up to about sixty miles per hour. Then the car started shaking really bad like an earthquake right in the front area and closer to the driver side. Still have the acceleration problem, there is no check engine light on. Diagnostic checks not coming up with anything. I have been to several mechanics who have looked at it listen to it. I was told I do not need a tune up, all the spark plugs look good. I was told to put in fuel injector cleaner in it. It made it run smoother stopped the rough idle, but now it runs like I am driving on the rough road it is still kind struggling to accelerate but it will. It is making this low humming/rumbling noise like it is going not going but it is a little sluggish. It also sounds like I am driving on rough roads all the time but I am not. It also vibrates bad.