Patrick Dempsey to make documentary on car racing

London: `Grey`s Anatomy` star Patrick Dempsey is bringing his passion for cars to the small screen in a new documentary series about his involvement in the famous Le Mans 24-hour competition.

The 46-year-old actor has his own professional car racing team, Dempsey Racing, and he will be among the drivers taking part in the gruelling 24 Heures du Mans car contest in Le Mans, France next year, reported Contactmusic.

Dempsey`s TV series will be about the challenges his team faces as he prepares for the endurance-testing event.

The actor, who came ninth in the same competition in 2009, will document his efforts in a four-part series called Road to Le Mans, which will air on America`s Velocity channel next year.