A lot of stock car racers join Nascar Racing as they deem it to be the ultimate measure of being a great driver. It does not only mean that the racer has to deal with speed, but also with maneuvering and adapting to the terrain of the tracks that he is driving in. And without the technological enhancements (as modifications are prohibited in the competitions), this can be such a challenge to all racing enthusiasts.
In the late 1940s, a group of racers have organized the authority in promoting and spearheading events for drivers of stock cars who are collectively known today as the National Association for Stock Car Auto Racing (NASCAR). This organization strives to unite all racers who are into preserving the respective conditions of their vehicles and battle against each other through fair and square means.
With the Nascar Racing events, people visit the race tracks spread all over the United States to see their favorite racers (and of course, their favorite cars) get rolling. During the season, everyone gets to observe the ups and downs of the teams and the individual members as they fight for the championship title.
Last, but definitely not the least, is the Camping World Truck Series which is home to races for pick-up trucks that are limitedly modified to be fit for the competition. This series gave way to those racers who want a more challenging experience, as the "feel" of driving these vehicles is a lot different than driving the typical sedans used in other stock car racing series.
That way, you get to convert your energy and passion for car racing to something more specialized and professional at that.