A .50 cal will still mess up the wheels and grill. You might have to keep at it for awhile. A penetrator will get through that vehicle. If a bunch of 7th century goat herder barbarians can build IEDs what do you think all the college grad guys in the US can churn out in their backyard workshops. It would definitely rain on somebody’s parade.
True, CQB just doesn’t appeal to me, prefer to keep a very healthy distance.