The limits of advertising

Is this an idea that could catch on?

A teacher near San Diego is selling advertising on tests.

The ads pay for the cost of printing the tests. $10 for a quiz, $20 for a test, $30 for a final exam.

Let’s think about this for a second. What other things can we sell advertising on to help generate some cash? How about the far left passing lane? Surely some Internet service provider would want to sponsor a 10-mile stretch here or there. How about the escalators in government buildings? Charles Schwab might buy the “up” side. I’m not sure how to market the “down” side.