Sports car racing is the best. Period. The cars bear some resemblance to cars you can actually drive on the street, unlike Formula 1, or Nascar, which–while the most popular forms of motor racing–are only like regular cars in having four wheels and an engine.
The World Endurance Championship (WEC) is perhaps the pinnacle of sports car racing, as it includes the 24 hours of Le Mans each year. There are other, shorter six hour races in the series and I attended the WEC race at the Circuit of the Americas (COTA) near Austin in Texas a few weeks back. During a five day, 1800 mile journey with friends from the Porsche club, I drove to Austin to see the race, then spent a couple of days in the Texas Hill Country and its delightful roads.
The WEC race started in the heat and humidity of southern central Texas at 5pm and ended six hours later in barely nicer conditions. But Porsche won ahead of an Audi and a Toyota by dint of luck and perseverance. That pretty much sums up endurance racing.