Cool vid, F...

G: I think that shot was done by someone riding on the roof;
we are just seeing the air intake cowling that is on either side
of hood, below windshield squirters.

Both X3 & X5 have considerable water "height", espc. for
short distances and/or not standing in water. If the air
induction nozzle stays dry, it will cross deep water with
little effort. I have done it after Hurricanes Ivan & Frances,
in the mtns, 2 summers ago. Pretty impressive.
BR,mD