15 Creative Ads in Unusual Places - Oddee.com (creative ads)
Nike 2012 My Time Is Now Campaign on Behance
Powerful and Creative Ads (123inspiration) - Imgur
Absolutely Brilliant Billboard Ads! | See More Pictures
These trucks are a great example of how to push traditional advertising and make it something fresh and eye-catching. I think this might be concept work rather than actual ads, but the idea could be a great way to utilize semis, buses, and more.