Wasn't me this year FF, but I actually heard, and watched this happen.
Circumstances- Low water crossing (6" deep) water running very swiftly, 20 ft water hole on both sides of crossing, which is about 3 ft wide, muddy water.
I actually heard my buddy say "These 250 Hondas, have big enough tires, that they will float across.
Results- They actually do float- just upside down, and about 1/2 mile down the creek.
I couldn't laugh to hard at him because this was the same buddy that pulled me out of an Icy creek several years ago.