. ♪ i'm derek, i'm hyungry, and ready to eat.hese vendors offer a variety of the streets near you. these mobile restaurants are serving up original, creative and unusual combinations. you can grab something simple like a grilled cheese sandwich or something unique like curry. we areher here in the average eight -- upper haight. you will be competing in the quick buy food challenge. an appetizer and if you are the winner you will get the title of the quitck bite "chompion." i am here with matt cohen, from off the grid. >> we assembled trucks and put them into a really unique heurban settings. >> what inspired you to start off the grid? >> i was helping people lodge mobile food trucks. the work asking for what can we get -- part together? we started our first location and then from there we expanded locations. >> why do think food trucks have grown? >> i have gotten popular because the high cost of starting a brick and mortar or strong, the rise of social media, trucks can be easily located, and food trucks to offer a unique outdoo