Craptacular Video

Storm sewer in Calgary gets pissed and decides to distribute its contents in explosive fashion...this by the way is strikingly similar to my post-Mexican food outing last night....



Here's what I don't understand - at the beginning of the video it looks pretty clear that there is no top or covering on this gigantic hole...then later it looks like a truck gets what looks like a giant manhole cover thrown onto its engine (I hope the driver is okay)...where did that thing come from?