I was trolling through Amazon Prime video yesterday and found a video with Norm Charbonneau's excellent 3-rail layout.
Just look up "3-Rail O Scale Trains" on prime video and you'll find it, if you're a member.
It's a great video and Norm explains a lot of the stuff he's done with his rolling stock, which even though I'm not into 3-rail, I found very interesting. He even mentions OGR at one point.