By Wilton Jackson The former NASCAR Cup Series champion suffered a crash at Pocono Raceway, and Ty Gibbs has filled in for the 23XI Racing driver the last three races. NASCAR driver Kurt Busch announced Wednesday that he will miss a fourth consecutive NASCAR Cup Series race as he continues to progress toward medical clearance. Busch tweeted that he has been recovering well and that he recently pushed to get his “heart rate and body in a race simulation type environment.” However, the 23XI Racing driver said this week was the hardest one “emotionally” and that it was clear that he is not ready …