Clearly obvious it's a Mountain Dew ripoff. I believe it has a regional popularity in the United States--either that, or it's just not as popular now as it was in the late '70s when it first came out. It is strange that you don't see it more, since it's to the Coca-Cola Company what MD is to Pepsico, and you think they'd want it in, say McDonalds and all those places with an exclusive Coca-Cola vending contract.

It's a bit sweeter and less sharp tasting than Mountain Dew, if you can believe that. I used to drink it a lot when I was a kid in Oklahoma in the aforementioned late '70s.