http://popvssoda.com:2998/

The map maker's methodolgy looks quite a bit off by just relying on people on the Internet filling out the survey. And it looks like most of these respondents were college students. Seems to be you would get a different result going up each ten year age bracket, i.e. the answers would be quite different among teens and college age students to 40, 50 and 60 year olds.