There was an excellent Toronto Transit commission ad, maybe back in the '80s, a bit like this. Print ad, two panels, in the first panel people sitting on the street, spread out as if they were in cars ; in the second, the same people as if they were in a streetcar.
I thought I had it saved somewhere.
"I appreciate SDF but it's a general-purpose server and the name doesn't make it obvious that it's about art." - Eugen Rochko