Your exhaust probably set up low level vibrations that intensified over time.
I was going to take a ride a little while ago. The temp was only 76°F at noontime. But as I walked outside, it was hard to breathe. The dewpoint is 73°F.
The AC is on full blast just to get rid of the humidity.
I checked the sq ft map of the house, and if you removed the roof of the garage, you could slip my entire house into that 3 car garage. I hate rich people.