It irritates me that hundreds of thousands of dollars are spent on after-market pipes world-wide just because stock pipes are too quiet. With the advent of electric vehicles, I'm gonna get rich selling loudspeakers with exhaust tones tied into the throttles of new bikes to simulate exhaust sounds. A guy could adjust the volume according to circumstances! Let's say you wanna rob a bank, you could ride up on a quiet motorcycle! But if you wanna irritate your neighbors, you could blast their windows open on "full-volume Harley mode"!