So I've been to this taco truck umpteen times in the last few months and I've neglected to share.
The truck is located on Vermont (heading North) a couple of blocks south of Santa Monica. Just north of Lockwood, to be exact.
So onto the food. First of all, they have hand-made tortillas, and good ones at that. I mean, I've eaten at plenty of taco trucks, but none with hand made tortillas. They have Quesadillas de Huitlacoche, flor the calabaza and hongos w/ epasote. They serve the quesadillas with lettuce, sour cream and queso fresco, so if you're not into either of these just let them know. Also, the quesadillas are pretty massive too.
They also have tacos, tortas, buritos...the usual. Besides their quesadillas I've only had their tacos, and mulitas. Their carne asada and cabeza are not that great, but their chorizo is yummy.
The truck is usually there everyday except Mondays, anytime after 6. I don't think it stays there very late either, but if you're in the area you should def give it a try.