I guess for many of conventional motorcycle riders (and cruiser motorcycle particularly) the big flaw of EV is soundless. I know, that HD LiveWire designers claimed that they bike sound like buzzing sci-fi drone, but for me it still sound like whining gears.
The easiest solution is uses of various exhaust sound imitation technologies like "Thor exhaust system" for instanse. But sound imitation technology is not the best way because its fake.And natural sound of electric motor might be pretty good ( https://www.youtube.com/watch?v=YJ0CU0-PzQc ) but for car or motorcycle it still not enough loud.
And i've thought, what if we use kind of sound pickup like acoustic guitar piezo pickup or something alike, engaged with motor body or stator. And then we will get the opportunity to procees the sound and apply different sound effects like equalization, distortion etc. And it wouldn't be a fake, because like sound of electric guitar isn't a fake.
I'd love to know what do you think about it.