Guerilla marketing catches one by surprise, and instantly generates a ripple effect through the most coveted advertising holy grail: word of mouth. When cars, such a large part of our typical lives, are thrown into unique and wild advertising campaigns it's difficult not to tell one's friends.

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Wireframes models are indispensable to car designers, enabling them to manipulate the shape of vehicles before they're created. How cutting edge would a new car have to be to escape the confines of the computer before it's even able to be produced? It's possible a random side street holds the answer.

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Smartcars are not known for fulfilling the typical American car values: Power, Looks, and Size, but it's hard not to be won over when they own their small size as their biggest asset. Creative advertising equate their economical qualities as similar to that of a bicycle, and their small size is accentuated by being showcased in oversized vending machines.

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Just try slipping this into the shopping cart without the wife seeing… It looks like someone managed to fit this full sized Alfa Romero into a typical shopping cart, though it definitely didn't escape notice.

(Images via theinspirationroom, funniest-commercials)

When would someone least expect a car advertisement? When they're moseying down the beach looking for shells to add to their collection. To add to the unexpectedness of such an encounter, these sand sculptures are sure to trigger the ecologically minded subconscious into relating these cars to nature.

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One of the few things worse for a car than getting a deep scratch, is getting an overzealous paint job. Throwing paint liberally onto a car is a great way to accentuate an advertisement that's straining to exceed its boundaries, and an even better way to get tags wagging.

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The best guerilla ad campaigns are temporary, but thanks to the elephantine memory of the internet, the best campaigns live on. One can't get much more temporary than cars carved to the last detail out of ice, casually parallel parked on a typical city street.

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A billboard is most effective when it's parked in front of one's door. There's a lot more room for creativity when an ad isn't stuck in a rectangular shape hanging high above the road. One example of great (though inefficient) marketing, are the empty wheel well graphics that say "got insurance?" on the other side.

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What's more fun than crushing a car? Nothing. That's why it's one of the most effective and eye catching ways to advertise a product. These products may not be larger than life, but at least they're larger than a car.

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Sometimes it's hard to take the billboard out of an ad campaign, so why not spice it up with a life sized vehicle? Adding a little bit of flair isn't conventional, especially when an ad campaign goes a little overboard.

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Guerilla campaigns don't only involve cars when new cars are involved. A great message can be passed along and a little creativity doesn't hurt.

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Mobile guerilla advertising bring the show on the road, catching eyes and proving a point with every mile driven and every passenger's attention caught. It's little doubt guerilla campaigns are the best way to get people interested, though it's doubtlessly too expensive to do on as large a scale as companies would like.