Many of the tactics mentioned is not new. We ran convoy escort duty many times in Nam and saw many of the ambush tactics mentioned. As a matter of practice - SOP - we never did the same thing twice, always changing our tactics and order of convoy which chellanged Charlie to adapt also. However, as Cav unit, we had so much firepower at our disposal that it was usually a turkey shoot. That is not to say we didn't lose men or equipment. That's war.
Generally speaking I doubt that convoy ambushes have changed all that much since the days of Rome.