Have you ever heard this sound?

Find a 5 gallon bucket, take it outside, place it upside down on the driveway (paved or gravel). Take a 2 lb hammer and strike it one time violently on the upturned bottom.

Let your ears absorb the sound. (Yes, I know it's loud). Think on it for a second.

Now, imagine a Toyota Tercel hitting the backend of a (stopped) full size chevy van at 35 mph.

No difference, eh?

I was riding home a while back with the windows down and 2 lanes over this accident happened. I about jumped thru my windshield as it startled me, but I can't forget that sound. No tire screeching either. Weird, huh.