I see what you mean Kamilb, I was out on my C5 with my dad and we went down a long Carriageway on the footpath then we came across this flood where cars have been through and had flooded the footpath, the deepest it got was less than an inch, the puddle was about 6 meters long I went through it at about 5 mph or less, when I got home I had a look underneath and it was filthy