Lucas Tucci Di Grassi (born 11 August 1984 in São Paulo, Brazil) is a racing driver, whose career has revolved around karting and single seater formula racing. Having finished as runner-up to Timo Glock in the 2007 GP2 Series season, he is currently the Renault Formula One team's test driver. He is also one of five racers on the Renault Driver Development (RDD) programme.[1]