During the drivers’ parade that preceded the Japanese Grand Prix on October 4, Williams’s Kazuki Nakajima rode in this vintage Japanese roadster. Can you help us figure out what it is?

With the wacky 2009 championship down to its antepenultimate race at Suzuka Circuit, Jenson Button’s eroding cushion of points was looking increasingly fragile. Rubens Barrichello and Sebastian Vettel smelled blood. Spoilers, shmoilers!