INFELICITOUS, FELICITOUS NAMES. The local news radio station runs frequent adverts for a motor vehicle, the Audi A-4. Something about that always strikes me as wrong, although a British marque A-4 (preferably a sports car) would be completely logical. See here. On the other hand, the Oldsmobile 4-4-2 (yes, an Oldsmobile muscle car!) got it about right.