Fredericksburg Taco Truck!
It's neon green. It's tucked in at the end of a tiny strip mall that sports a tux rental and B&B Service, on Main St. at Franklin, opposite Miller's Inn. Not sure what it's called but the taco kings behind the sliding screen are Rudy and his sidekick from Houston (and Rudy's young daughter on weekends.) The good parts are homemade tortillas, low prices, and kick-ass way-picante salsa, which is hard to find in Fburg. Breakfast tacos are made to order. Wash a few down with an ice cold DP. Heaven.