U.S. driver Alexander Rossi will remain the second team reserve , but will take over Ma 's seat in the GP2 championship -- which is the official feeder F1 series for the next generation of drivers . Heikki Kovalainen to return to Caterham after losing seat with the team in 2013 . Finnish racer will drive for Caterham in 11th practice in Bahrain and Bahrain . Caterham want his help in understanding 2013 car and tire behavior . Barcelona racer Caterham takes over Caterham GP2 drive from China 's Caterham .
Heikki Kovalainen to return to Caterham after losing seat with the team in 2013 . Finnish racer will drive for Caterham in 11th practice in Bahrain and Bahrain . Caterham want his help in understanding 2013 car and tire behavior . Barcelona racer Caterham takes over Caterham GP2 drive from China 's Caterham .