OK...now I'm confused.
French wasn't one of my best subjects in school, but I was always led to believe that the 2CV was an abbreviation for deux chevaux...literally "two horses", from the tax horsepower rating given to the car. How do you say "two basset hounds" in French?
This photo is on the Website/blog of the Citroën Club of North America. If you like little cars, you'll love their site.