this is a fun little trick i did while me and a friend were playing around.
first, you buy a saddan
then, you get a hotwire
next you rig up your car with as much c4 as you possibly can.
Finally, take your car. it is small enough to fit inside buildings, so drive in and park nest to the MCT.hop out, run and blow it.
Although this may not be that effective, it is a lot of fun, so try it out.
p.s.:make sure base defenses are down