Speed Kills (your pocketbook)

I'm back from the New Partners for Smart Growth conference in Denver but am headed back out on the (snowy) road (3-6 inches) today for a Curbside Chat in Northfield, MN. I'm also prepping for a podcast tomorrow with Ian Rasmussen where we are going to discuss the arguments in this video:

I've been making arguments like this for years and years. Ian doesn't see it the same way. Understanding that most people agree with Ian -- and he is intellectually a very worthy opponent -- I thought it would be an interesting conversation.

Th video is meant to be provocative, but what is your reaction to the underlying argument: that posted speed and roadway design have little to no relation to each other?