I'm currently using a bluetooth speaker in my car while I fix the stereo. Two minor UX issues I'm having: * Unlike the builtin system in my 15 year old car, th

I'm currently using a bluetooth speaker in my car while I fix the stereo. Two minor UX issues I'm having: * Unlike the builtin system in my 15 year old car, the bluetooth speaker doesn't adjust volume with my car's speed, so I have to constantly adjust it. * The speaker's interface isn't designed to be used without looking (small buttons flush with the housing) so adjusting the volume all the time is particularly annoying.