Runaway Truck Ramp

I've gotten a few emails from people asking what a runaway truck ramp is and what one looks like so my husband and I took a video of one that we saw recently in Colorado. The gravel that you see is there to make the truck slow down and eventually stop (hopefully before you hit the end of the ramp). 

Here's another cool video that we took as we drove through a tunnel in the Rockies.