The Drive Score website is now back online, so I can tell you:
1. Death Valley, CA gets a “7/100″ (If you can find someplace thats less drivable, let me know)
2. Area 51, NV gets an “8/100″
2. Pony, Montana gets a “12/100″
3. New York, NY gets an “83/100″ (NB: In real life, do you think New York is more or less ‘drive-able’ than Death Valley?)
Thinking about this site more, I now suspect that its just a straight javascript rip-off of the walkscore site. Lots of these types of mash-ups are only implemented in Javascript, and thus, are very easy to rip off and tailor to your own needs. I bet thats whats happened here.