Of course, the Bootmobile is just one of a long line of vehicles whose sole purpose has been advertising. According to an article by Brad Herzog, there's been a Hershey's Kissmobile, a Meow Mix Mobile, and a pickup truck with a lobster on top, Red Lobster's Clawde.
Image by Joe Shlabotnik
The article references an earlier era when there was a Pep-O-Mint Lifesavers truck, a car shaped like a vaccum cleaner. a Heinz pickle car, a car shaped like a can of V-8 and a Zippo lighter car.
Image by justin<3sasha
And...to this day, there are Spammobiles and, of course, the most famous of all, the Oscar Meyer Wienermobile. I knew someone who drove the Wienermobile, and I once went out for a walk to find the Wienermobile parked a couple of blocks away from my house. It was a rather surreal experience.
Of course, all of this is for advertising, but let's face it, the advertising wouldn't work if it weren't so much fun. From now on, I know I'll be on the lookout for the Spammobile when I'm driving down the road.
(I've seen other images of this. Apparently when on the move, the can of Spam is not on top).
Image by David Boyle