Not all food trucks sell alcoholic beverages but some do. When the Turkish Taco Truck got a license to sell alcohol from its food truck, it was a milestone event. Their business name will forever be in the annals of history as being the first food truck with a liquor license. However, since then many food trucks have declined to apply for the same license. Why?
One reason is that food trucks given the permit to sell beer, spirits, or cocktails can only do so if the customer sits in his designated sitting area. One cannot buy a beer and walk away from the food truck, drinking it.  It would be a violation of the permit.
Another reason is that local governments are stingy about approving liquor licenses for fear of a backlash from bars and the general public. There is a certain element of risk involved that they are not willing to gamble on.
Early this 2013, 2 groups composed of local citizens filed a petition with the District of Columbia to put a moratorium for liquor licenses in 2 areas: the U Street NW and the 14th.  They cited increase in noise pollution, crime, and parking problems as their reasons.
However while all these reasons for not applying for a liquor license makes sense, there is one more: many food truck owners stand by their food and believe it doesn’t need alcohol to sell. In short, they’re proud of their menu.
People don’t go to food trucks to buy beer; they go to food trucks to buy something different, something special. They also patronize food trucks because it’s convenient and they are rushing.
When the Turkish Taco Truck got its permit in 2011, many thought it would start a precedent. The forecast didn’t really come true. Of course many food trucks also don’t have a sitting area which automatically will result in an approval of a liquor license. To have a sitting area means being in a more permanent setting and probably paying rent.