There's no alcohol in eg Canada Dry. It's ginger sugar syrup mixed with soda water, like any other soda.
http://blog.seattlepi.com/hottopics/2012/06/28/coke-pepsi-co... or original article (French) here: http://www.60millions-mag.com/2012/06/27/coca-pepsi-et-autre...
Though these are at beer level.
Kombucha often contains a low (< 1%) amount of alcohol.
A coworker of mine was recently carded when purchasing kombucha :P