I thought my autocross car had bad resonance and rattles until yesterday. I had the misfortune to fly on a 717, sitting right next to one of the engines. What a pile of crap. The interior panels were visibly shaking and rattling, and until we really got going, the cabin resonance was making my stomach and head want to call it quits. I hate air travel.
https://en.wikipedia.org/wiki/Boeing_717#/media/File:Boeing_717-23S_-_EC-KNE.jpg