New Fiesta Beats Volvo XC70 !!!

I watched the BBC Top Gear programme last night. Normally they test supercars, but last night they tested one of Ford's smallest cars, the new Fiesta. It was done a bit tongue in cheek, but overall it was a very interesting piece. The last section of course was typically Top Gear dramatic, they put the little Ford into a what I believe was a British Royal Marine landing craft, and did a beach assault... so Clarkson was sitting in the Fiesta full of Royal Marines and guns and grenades. The landing craft hit the beach and they lowered the ramps. However the landing craft was still in quite deep water the the ramps were steep. Clarkson drove the little Fiesta straight into the sea... even he admitted it was a lot deeper than he thought... the water went straight over the bonnet.. right upto the windscreen..and maybe two or three inches up the windscreen.. it was that deep.. he then continued driving the car.. with marines onboard, through the sea onto and up the beach.. he commented that water was coming in.. but he continued until he reached the beach. Now I don't know if all of this was real.. but if it was done like that.. I find it totally incredible. How did that little Fiesta manage this when my Volvo XC70, totally failed in circumstances which were a lot less challenging????