The Streetkhana autocross has become a fixture of the NSRA Street Rod Nationals, turning a corner of the Kentucky Exposition Center into a timed slalom course for hot rods built decades before autocross existed. Introduced in 2016, the format tests driver skill with hairpins, switchbacks, and speed-gathering straights, awarding fastest pre-1949 and post-1949 cars. What began as an experiment has become an annual tradition.