Bandito Brothers has hired David Baxter to write the screenplay for the biopic, Challenger.

The film is based on the life story of murdered auto racing promoter Mickey Thompson. Thompson's life and death are the subject of both an ongoing 48 Hours investigative report and an America's Most Wanted story. Variety reports Challenger will focus on events that lead up to the 1988 execution-style slaying of Thompson and his wife by two hooded gunmen. The case was unsolved for nearly 20 years, but Thompson's estranged business partner and Supercross founder Michael Goodwin is currently on trial in Pasadena for plotting and ordering the murders.

No production schedule has been set for Challenger; another film on the same subject, Gearhead: The Legend of Mickey Thompson is already under way on production.