> How sad can you be where you need artificial engine noises?
Pedestrians kinda need an auditory cue that car engines give off. But 125db is probably a bit over the top.
Wikipedia:
"The U.S. National Highway Traffic Safety Administration issued its final ruling in February 2018, and requires the device to emit warning sounds when travelling at speeds less than 18.6 mph (30 km/h) with compliance by September 2020, but 50% of "quiet" vehicles must have the warning sounds by September 2019."
Also:
"The American rock band Linkin Park is helping Mercedes-AMG come up with just the right sound for its electric performance car."