I can attest to that. I've seen them during car week here in Monterey, CA.

That went away with the advent of LED lightbars. And the fact they can place them inside the vehicle for aero purposes.

Good thing you weren't at the Monterey Motorsports Reunion last year. Both doors were open.

Seen them, yes multiples. Monterey Motorsports Reunion aka Car Heaven in Pebble Beach.

Have you scared anyone who doesn't know what it is? Either by way of putting them in the passenger seat or because you spun in front of them?

Clearly there are some good answers but nothing comes close to Hot Rod from Transformers the Movie. You know the cartoon version from 1986. Not only is HE a cool car with a ridiculous engine and exhaust, but he's a TRANSFORMER!