Well, not quite, but they've at least built seriously armored trucks. Look at this beast that was captured by Mexican authorities following a firefight two weeks ago. The truck can hit 68-mph and carry 12 men and, as you can see, it's got some serious armor. Apparently it was disabled with shots to its unprotected tires.
Kind of reminds me of the gun trucks used by the U.S. military in Vietnam and later, Iraq.