Busch suffered a ෴concussion in qualifying at Pocono last year.

He🎶 had already confirmed that he wo༺uldn’t return to full-time racing this year.

It was hoped Busch might feature in select races but he has now cl🉐osed the door on an epic career.

"Sometimes𝕴 father time can catch up to your dreams," he said.

"My incredible team of doctors and ♏I have come♕ to the conclusion that at this point in my recovery there are just too many obstacles for me to overcome and get back to 100%.

"So after 23 years behind the wheel and 45 years of living and breathing this dream, I am officially announcing my retirement from NASCAR Cup Series competition.ᩚᩚᩚᩚᩚᩚ⁤⁤⁤⁤ᩚ⁤⁤⁤⁤ᩚ⁤⁤⁤⁤ᩚ𒀱ᩚᩚᩚ"

Busch is now 45, and♎ is a 34-time NASCAR race winner.

He ends his career with 776 Cup stཧars, the firstꦿ of which was in 2000.

Busch is 25th on the list for all-time wins.