Still I'd rather be listening to a 80db combustion motor spinning up and turbo whining, occasional back fires, flames from exhaust etc.. than a 80db electric buzz box ;-) I'm sure most race-car fans would agree.
I grew up near a F1 track during the "big bang" turbo era (1,350+HP from a 1.5 litre engine that would only last 3 alps in qualifying trim)[1]. I'm pretty sure we'll never hear engines like those in circuit races again, and I'm not sure that's a bad thing.
[1] http://en.wikipedia.org/wiki/Formula_One_engines#1966.E2.80....