Yep. the car Biker Fox had for sale. It might still be him listing it on CL. Same photos as his eBay ad: https://www.ebay.com/itm/1967-Buick...=true&nordt=true&rt=nc&_trksid=p2047675.l2557
Interesting, this thing is located in Niles where I live. Can't say I've seen it around. I'll keep an eye out for it.