beier -
This is a really stupid idea. I used to be a car salesman and I promise you that there is absolutely nothing you can do to get a test drive without a valid driver's license. The risk to the dealership is simply never, ever worth it. If you got into any kind of accident, they would at the very least lose their dealer plates and probably their insurance. Don't waste your time and theirs.
I too am surprised that this thread made it to three pages.