Vehicle shakes when I accerate at any speed

What is your question?

I was driving on the freeway and it just started to shake and rattle real bad. First I thought it was a blown tire. I got off the fwy and then put it in park, revved the engine no rattle or shake. The drive home from there was really bad, shaking and rattling couldn't go over 20 mph. Not sure what it could be. Just need some good advice. Thank you