The SRX Racing saga continues ... but they have fenders! These cars were great for short track racing, dirt racing, and drivers from outside of those disciplines were more than happy to give ...

The track hosted the short-lived Superstar Racing Experience, or SRX, backed by NASCAR ... of the National Sprint Car Hall of Fame & Museum. "It's a real black, rich dirt clay," Baker said.

The NASCAR Cup Series stars will run sprint cars on the Vegas dirt track this week as the series co-owned by Larson begins its fourth season.

Stewart retired from NASCAR at the end of the 2016 season and continued racing on dirt and created the SRX racing series ... and a Funny Car entry with Matt Hagan behind the wheel.