Seems like a prop from Fallout, but no, Nitro Cola was a genuine product. Found in this bottle cap gallery at Flickr. There's several toy Nitro delivery trucks on sale at eBay. Via.
Relatedly, check out this concept packaging by Samantha Wiley for Mocking Bird Lager
There's three alternate concepts here.
*Previously: Ice cream I'd buy just for the packaging.
*Buy the Little Book of Big Packaging Ideas at Amazon.