Unless you have a designated driver or pay $100 or more a head for an organized tour, the risk of tipsily driving back into town is a legitimate one. Although DUI statistics can't be specifically pegged to wine tasting, logic dictates that daytime drinking in venues that don't serve food (most are BYO picnic) and then getting behind a wheel on rural roads is a dangerous combination.
Depending on the size of the vehicles, it works out to about $35 to $45 an hour. Tasting room fees and meals aren't included, essentially making it a no-frills, low-cost alternative to a traditional wine tour.
For now, UberWine's footprint is too light to have an impact on other businesses. In fact, it's barely on the radar of the tourists who come here.