Professional: one who follows an occupation as a means of livelihood or for gain. We all know that many of the drivers are not paid by the teams, but rather bring large amounts of funding to the table. We often hear of drivers benched in favor of slower but better funded drivers. Given that many of them aren't paid, and in fact pay to race, are they professional race car drivers? Or is this really the highest level of hobby driving in the world? I truly believe that there are folks on this board who, if they had enough money, would be able to buy a superlicense and a ride in F1.