Yes it was Toltec's turn I think ! But since you mention it ...
They not only pushed the boat out but did so all the way to the ground/bed !
I guess they might have seen the dark of the water as the road, especially in failing light or much reduced light when the clouds come over !
... Also the situation where the brain makes up parts of the image (we only 'see' some of it) as we assume so much !
And then of course the cars might have stopped in much shallower waters and then the water rose afterwards! Not that getting stuck isn't a bit silly in the first place ... but depth of water on unknown roads can be hard to correctly judge!
Chap might be saying "I really don't think that tape is strong enough to pull me out mate !!"