Kia Spectra Commercial

There’s a commercial for the Kia Spectra that has me baffled. What happens is this:

There’s this beat-up old junker parked on the street. Multi-colored doors, lots of rust, etc. Some guy, presumably the vehicle’s owner, surreptitiously walks up to it, looks around, and then pulls back a tarp. Pulling back the tarp reveals a beautiful, brand-new Kia Spectra beneath it. The tarp itself was colored to look like the rusty old beater.

I’m wondering if they did this with some sort of CGI or bluescreen technology, or if they meticulously painted an actual tarp to make the Kia look like an old beater.

Anyone have any inside clue about this commercial?

The ad agency that did it, David and Goliath, uses the somewhat vague term “digital retouching,” but you can assume that no one did any painting. When I’ve seen the ad, as the guy unrolls the cover you can detect a bit of “blurring” around the edges of the tarp that suggests that you’re looking at computer-enhanced imaging.

(Note: that link requires Flash, and you have to click on “work,” agree to the terms of use, and then it’s the first ad in the upper left-hand corner of the grid. This link takes you to the “terms of use” page directly.)