Ofcourse they make sports cars, don't be so thick lol
It still counts as something anyway, everyone knows Mercedes as a fast, luxury car manufacturer with a good history of cars. F1 is just a bonus and if people know something about F1 and know mercedes history in F1 and had the money why would they not be more tempted to buy one? I agree they can't make that much in car sales from F1 but theres lots of other way to make money, you get silly amounts of money in the championship table for each place you finish. Merchandise etc etc
But yeah, when it comes to the cars, aslong as people assosiate Mercedes with speed and luxury i don't think they are too bothered, its all brand awareness.