Signs of the times

I was driving home from work the other day and I saw a taxi with an ad on it for a company called "Signs by Tomorrow". An ad for a sign company was on a taxi. Shouldn't a sign company put up, I dunno, a sign? I've never really seen the point of advertising on public transportation - (if a taxi even qualifies as public transportation). But does anyone really see a bus drive by and say "OH! That's the movie I want to see tonight!"

If advertisers were really smart - they'd make the ads point to wherever the bus was going. Like if I see an ad for a restaurant on the side of a bus - that bus should take me to that restaurant. Same thing for movies - I should be able to jump on that bus and have it drop me off in front of a theater that is playing that movie. Otherwise, it's false advertising. Not for the movie, of course - but for the bus.