Since EVs became more common, the proportion of loud cars, both from the factory and modified [1], have increased about equally. This leads to the conclusion that as all Harley goes out of business, and all the old loud cars disappear, the boys will have to find a way to make EVs loud. Will they go with the Tesla fart sound approach, and do illicit firmware upgrades to make superloud Star Trek noises?
[1] I mean seriously, when did putting straight pipes and headers on a mid-90s F-150 become a thing? That disappeared for a while. How do they pass emissions?