Wifi at a drivethrough?

Apparently BT are teaming up with McDonalds to offer WIFI at the drivethrough. Now I thought you got into enough trouble eating at the wheel, let alone operating a laptop or handheld at the same time....and as for the wardrivers, how interested are they going to be in the number of BigMacs being ordered at that present moment - mind you, hacking the wireless network could produce some fun food orders and who knows, you might even get what you ordered!