Yes. Cast your mind to lightly-traveled rural roads. If you are driving one of the many unpaved roads in Arizona during flash flood season, and the last car through was a couple hours ago, will you bet your life that the road is still there?

But hey, that's not a realistic danger in the city, right? Well, look up the sinkhole named "Steve" that opened up in the middle of an Oakland, CA freeway.

Then there's Highway 1, which is known for landslides. Not to mention that little incident with the Bay Bridge back in '89...