 After that, he spent the next three years in the GP2 Series where he won four races and finished the runner-up in 2007 to Timo Glock.Di Grassi drove in Formula One with the Virgin Racing team in 2010 but was outperformed by his teammate Glock and was dropped for the following season.He was subsequently employed by Pirelli in mid-2011 as their official tyre tester and developed the company's next generation of tyres.