The link I posted was incomplete.

This is the first piece Diane Sawyer did that mentioned Mountain Dew. It's about halfway throught he video.
http://abcnews.go.com/video/playerIndex?id=6862142

And this is the followup, that focuses exclusively on Mountain Dew.
http://abcnews.go.com/Health/story?id=6863173

Ultimately, I think Pepsi gave the dentist in the story some money for a vehicle.

Susan