I saw a still of that on Twitter the other day and was looking for the full video. It's quite scary when the car seems to float a little, but I wonder if that's actually an illusion?
They're all absolutely nuts trying that. Including the MG4 driver. The ones taking a run at it were the really stupid ones though. I was always taught (in an ICE car) to go as slowly as possible, slipping the clutch to keep the engine constantly working. I have gone through less than that in a DSG car and got away with it simply by slowing down and keeping my foot on the accelerator to achieve the same effect. But never, never take a run at it. The cars who got through seem to have taken it slowly, plus they were more suited to it, like a Land Rover.
It was interesting to see that one or two cars that seemed to get through then appeared to break down only yards beyond the ford. I saw water running out of the exhaust pipe of one of them. The later part of the video seemed to be the next day when the water level was a bit lower, and more people were managing to get through.
I thought I saw one guy lose his undertray in the video. I'd love to know the state of that MG4's undertray. If it had the warp, I'd be a bit surprised if it didn't come loose.