Apparently Audi hasn't heard about the negative PR associated with jokes about suicide. To promote the benefits of "clean diesel," Audi shows a man trying to off himself in a TDI-powered A5. It's not working. The suicide or the commercial.

In today's advertising world the question isn't whether your car commercial has a famous spokesperson, indie music or flashy graphics. The question is, when you turn on one of these ten sexually suggestive car commercials, does it return the favor?