Truck with a trailer and a massive EMP (electromagnetic pulse) device

Truck with an EMP (electromagnatic pulse) device which is just below the size of the trailer
and inside the trailer.
Around: (2 metres high, 10 metres long and 2,50 metres wide)
        (Or 2 x 2 metres high, 5 metres long and 2,50 metres wide)

-Seeing what the reach is
-Seeing the damage and more it causes