I hadn't seen the Easy Rider one until I joined the forums and YouTube came into being. I think I have a copy of that one saved on my computer. I also have the liquid metal one (which I understand never aired and was done as a test), because the Knight Rider soundtrack and sound effects crack me up every time. (Again, a couple quick searches didn't turn it up on YouTube, but I'm sure it's still out there somewhere.)
We're moving to a new house, so while packing I came across some of the original brochures and stuff I have from the Cougar. They were kept! I also have a copy of Popular Science magazine from December '98 listing the Cougar as a Best of What's New.