I don't really follow racing, but having lived in the area (and biked past it many times), I hadn’t realized the Hockenheimring wasn’t in use anymore for Formula 1. AIUI it's still available for people to race on, though, so "abandoned" in this video's title is over-selling it quite a bit:
https://www.youtube.com/watch?v=_BCvm6yP_zQ
(Though I guess their excuse is that *part* of the old track was closed down and turned back into a forest, therefore "abandoned", but please …)