ブラウンGP
Davidson was announced as a Honda test driver for the remainder of . On 5 December 2008 Honda pulled out of Formula One due to financial problems. Ross Brawn bought out the team and formed Brawn GP and Davidson signed on as a test driver. On 16 November 2009, engine suppliers Mercedes-Benz bought out Brawn GP and renamed the team Mercedes GP. Davidson continued in his role as reserve and development driver.