Check out this ad for the Volkswagen Polo (link may be dead) that's been going around. A suicide bomber blows himself up inside the car, but the car is so tough that it contains the explosion. Seems to push the envelope a bit too much to be an actual ad commissioned by Volkswagen, and sure enough it's not. It's a 'spec ad', created by leeanddan.com. Spec ads are 'speculative ads' created to show potential clients what kind of work you're capable of doing. In other words, Volkswagen never endorsed this material.
Update (1/20/05): The Guardian reports that they were able to track down Lee of leeanddan.com, who did indeed make the VW Polo ad. Lee says that he wasn't working for Volkswagen, but implies that he made the ad to get Volkswagen's attention. Reportedly the ad cost £40,000 to make.