Turns out the footage I posted was from Yokohama Hakurankai (or YES '89 as I'm going to call it from now on), so that was a bit anti-climactic. This particular event was widely covered by the Japanese press so I can point out vaguely where it was in aerial photos: This unassuming building behind the... giant ice cream cone. The whole area has since been redeveloped - here's vaguely where the spot was but honestly it's hard to tell. There's still a ferris wheel though... on a different bit of reclaimed land. After that, Sega Super Circuit moved(?) to Sega World Tokyo Roof which I've posted before. Same layout, but six cars instead of five. This may have introduced the electronic scoreboard, but there aren't super clear photos of anything (Sega Retro were pioneers at pointing out this event even existed, so I'm not expecting details any time soon). There's also talk of a version seen in a shopping centre - not sure what the story is there. I was going to point out how flimsy the video signal was, given that it seemed to break up almost constantly, but then I remembered, this was the late 1980s. This is Ayrton Senna's onboard camera while driving around Monaco in 1990. It's probably the same technology, and compared to any modern standards, it's atrocious, breaking up whenever there's a bump in the road. When drivers entered the tunnel, the system didn't work at all! So this is Formula 1, the pinnacle of motorsports, with cutting-edge technology and tons of money (in Monaco no less), and even it couldn't solve the problem. In fact from the looks of things, they didn't solve the tunnel issue until a decade later.