The colour of the sky wouldn't be so much of a problem if it matched the colour of the torch.
Also if you had a shorted exposure and did multiple shots, you would see less of the light pollution in the sky.
I'm sure you could get it matched in photoshop though, a couple of layers with masking and custom colour temps.
Other than that you've done well to light the car to see the detail without losing the essence of a night shot.