One of the key measures of an athlete is not just how he prepares before a game or race, but also how he prepares for life after his playing days are over.
Particularly in NASCAR, being business-savvy is as important as being race-savvy. The most successful drivers aren't just racers, they're great commercial pitchmen, and perhaps more importantly, great salesmen that can help team owners attract big sponsors to fund a team's operation.
Many of today's drivers are involved in racing operations, either being part-owner of the team they drive for, or owning various other racing enterprises such as race tracks, teams in other racing series and more.
They also oversee their own souvenir and memorabilia trailers that travel from track to track, allowing fans to purchase various items such as caps, t-shirts, jackets and more—all emblazoned with their favorite driver's name or logo.
Here are 10 of the most business-savvy drivers in the sport today—and how they've become that way: