Army advert a couple of years ago

[sugarmouse]

I saw an advert for the army in which a convoy drove along a track and the front truck set off a land mine. How did the convoy escape without using helicopters or walking over the tracks left by the first vehicle?

[lilsville]

they stopped the trucks and an army man crwled on his belly along the track poking every part with a twig to see if anythng set off