This really is a superb idea! I don't know why I didn't look in here earlier.
Now here's a way to take it one step further... what about re-skinnning a billboard and uploading them? There are a few in this thread I'd like to put in a route...
Anyone know any billboards that are OK to re-skin? Shoves has a small portrait format one, but I'd like to do a plain one without lights...
Paul
p.s. BidMod - I see you've set up your business in Westhaven...