Well, I feel better after reading jnasty's post. I was up until 200am this morning, and spent most of this evening scouring the galleries for any ideas. I submitted my answer at 9:55pm tonight!
I was SO CLOSE to saying that it was the box for the price numbers in Bonkers. Then I found a picture in the galleries that proved me wrong, so back to the drawing board. My final guess was that it was the back view of one of the number boxes from 3 Strikes, as well.
I was trying to be logical about it. The two lights inside the box would provide the backlight for the number. There appears to be a white protective cover over the "front" of the box, and two hinges on the right that make it possible to easily change the numbers, according to the price of the car. The cover appears to be well-worn, and the lights are an older technology, which is consistent with the fact that 3 Strikes has been around for a long time.
With all that logic and thought, I'm probably wrong!! But seeing as how there are several of us who guessed 3 Strikes, I'm feeling pretty good about our chances!!
Kudos, Marc! Nice brain-scrambler!