Pedro de la Rosa and Narain Karthikeyan returned to Formula One with HRT. De la Rosa had been without a full-time drive since the 2010 Italian Grand Prix, having spent the majority of the season as a test driver for McLaren and making one appearance racing for Sauber; Karthikeyan was dropped by the team before the 2011 British Grand Prix in favour of Ricciardo. He, too, made a one-race appearance at the Indian Grand Prix, before leaving the team until the 2012 season began. Vitantonio Liuzzi, who drove for HRT in 2011, joined the Indian i1 Super Series. The series was later postponed until 2013, but Liuzzi was unable to retain his seat with the team. At the launch of the HRT F112 in March, Liuzzi was confirmed as one of the team's testing and reserve drivers alongside both former GP2 Series driver Dani Clos and Ma Qinghua, the first ever Chinese driver to step into a Formula 1 car.