Weird! I guess they don't want you to sneak up on anybody. 
While the body of evidence for the accident-preventing benefits of noisy electric vehicles isn’t vast, the federal agency claims models with a “quiet” mode (silent low-speed electric operation) are 19 percent more likely to be involved in a collision with a pedestrian or cyclist than an internal combustion vehicle. Adding the speakers could prevent 2,400 injuries annually once adopted, the NHTSA claims.
U.S. Decides All Electric Vehicles Must Make Noise by 2020
BTW: Our 2014 Cruze (1.4L turbo gas engine) is so quiet and smooth, you think engine had quite while stopped at red light.
While the body of evidence for the accident-preventing benefits of noisy electric vehicles isn’t vast, the federal agency claims models with a “quiet” mode (silent low-speed electric operation) are 19 percent more likely to be involved in a collision with a pedestrian or cyclist than an internal combustion vehicle. Adding the speakers could prevent 2,400 injuries annually once adopted, the NHTSA claims.
U.S. Decides All Electric Vehicles Must Make Noise by 2020
BTW: Our 2014 Cruze (1.4L turbo gas engine) is so quiet and smooth, you think engine had quite while stopped at red light.
