Super Bowl Ad Opt In

For the Chrysler commercial (http://www.youtube.com/watch?v=SKL254Y_jtc) they had to pay $12 million per commercial (Superbowl ads cost $100,000/sec). The ad was a record 2 minutes long, and followed rap artist eminem through Detroit. At $21,000, GM would need to sell over 500 Chrysler 200's/commercial (the car being advertised) to break even. Since 111 million people watched the superbowl, many of them only for the ads, I don't think this is a good deal. At 500+ cars/commercial, and the commercial needs to air multiple times for it to leave a lasting impression on the audience, the cost will be to great to overcome in my opinion.