Today over at the Disney Parks Blog, a live chat was held with Imagineer Melissa Jeselnick. The Imagineer revealed some details about the currently-being-revamped Test Track in Epcot.
First off, Jeselnick said guests can expect a totally different queue area, noting it "will look like nothing guests are used to seeing it look." The design aspect of automotives will dominate the queue; look for "items, sketches, cars and models from GM that have never been seen outside the Chevrolet family."