It's so true. Although they probably could have done a better job with the filming, it gives a poignant message; slow speeds kill. Or at least seriously injure. The faster you go, the less people you'll hit. It makes logical sense.

When you next rob a bank, make sure the getaway driver drives as fast as possible to save lives. The police following will have their sirens blaring, nee naw nee naw, etc. If you're on the motorway this will scare people shitless, and they'll start swerving everywhere to avoid the siren. Now, if you're going at the speed of sound the police car will be forced to drive faster and faster, and ultimately it will crash. What can you expect when there's a pig driving the car? This means no sirens and hence less people getting paniky and killing themselves. Perfect sense.