curbside malevolence？

Or can I take it as 'the car attracts more attention on the streets'?

Malevolence is pure evil. Many perceived evil things have a beautiful exterior, like a volcano, a vampire or a snake... this car is like a devil in a red dress.
When it's parked and silent, you can feel it's potential, it's power.

I think in this context it is supposed to be mean "badness".

It's American slang: something being "bad" is really good.