Bistro Chaser provides a real time tracking Google Map for food trucks in Los Angeles, Orange County and New York. The map uses Twitter messages from the food trucks themselves to provide updates of their current location.
If you select the Schedule section of Bistro Chaser you can select a city and a specific food truck. You can then view the schedule for the selected food truck. The different locations that the truck is planning to visit are shown on the map and listed in the map side panel.