All EVs are required to have low-speed (up to 18.6mph) noise makers even when moving forward. https://www.reuters.com/article/us-autos-regulations-sounds/u-s-f

All EVs are required to have low-speed (up to 18.6mph) noise makers even when moving forward. https://www.reuters.com/article/us-autos-regulations-sounds/u-s-finalizes-long-delayed-quiet-cars-rule-extending-deadline-idUSKCN1GA2GV https://www.reuters.com/article/us-autos-regulations-sounds/...