I have two vintage BMWs there that those guys are combining into one (a '73 2002 in good shape but with a crappy engine and a rusty '74 2002 with a really nice engine and transmission).
Amazingly, my cars were parked in the right area and were saved... but the shop owner said that 80-85% of the cars on site are now gone. Their shop building also survived. Most of the cars were parts cars and not customer cars, but some customer cars definitely went up in flames. And those parts cars had value, too.
Fire was started in a field adjacent to a high school, so presumably some kids skipping class and smoking cigarettes.
Wild shit.