This reminds me of that movie with Kevin James and Vince Vaughn, The Dilemma.
Their whole objective was to design an electric car with a "fake" exhaust sound to compliment the rpm.
Someone said earlier to hack the sound. Now, that would be hilarious. For comedic purposes, I'd get a ugly "fart can" exhaust sound off a cheap rice rocket and implement it to this $ 6-figure car.