Vendor locations, hours, menus, specials, even Twitter feeds are easily browsable with the app, and Google Maps integration will even direct you to your truck of choice. Individual vendors can claim their businesses (similar to Foursquare's model) and change their location, add photos, and update menu items. The app comes loaded with over 2,000 street food vendors in 184 cities. That's a lot of street meat!
Download the free iPhone app from the App Store — happy eating!