The interesting thing is, as more cars become electric, the noise floor lowers and you will likely be able to pick out oncoming cars just as easily.
I can't hear a single engine, but I can hear the hum of tires a long way away. Sure, I can sometimes hear a loud exhaust but those come and go in seconds. Tire noise is a 24x7 sound until winter (snow attenuates sound really well).
Source: typing this in a city with lots of roads and traffic.
There is a also a massive difference between noise a normally driven ICE vehicle makes compared to an electric one at city speeds. The electric ones are very silent and barely audible if they don't make that humming sound. Even at 20-30mph.