edited to add:
Duddlebug is a game often played in the US and has been going on for years! When you see a VW Beetle, you are supposed to say, "Duddlebug!" Different models are worth more points - like a light blue convertable is worth 20 points, old style Beetles are worth more than new, etc. (And everybody usually has their own set of rules.) Anyway, everybody tries to see how many Beetles they can spot in a day and the one with the most points wins.
Naturally, when I saw the VW in the photo, I could not resist.
my kids and grandkids call it "slugbug" if you see a VW and call it out first you slug the one next to you in the arm. Makes for an interesting ride in the car. (Warning, can turn ugly.)