Help me diag

Just bought a 2013 Honda Pilot EX. Had an issue with the battery and that was replaced. Was also informed alignment was off and would need to get a bar to fix it but not urgent.

Here is the issue we can’t figure out. When I’m cruising from about 20-40mph there is a humming and vibration I can feel in the wheel and seat. But if I hit the gas it’s not there. When I took it on a road trip it wasn’t there at all going 60-80mph with cruise control. Hubby noticed it still vibrated when I was turning with light breaking. Also kept going when in neutral.

I mostly notice this after I’ve driven for a few miles. If I hope over to store on the way it’s not noticeable but on the way home it is.

Any help is appreciated.