What flag does the Swiss born Formula One driver who competed in the 2015 season for Lotus race under?
Lotus E23 Hybrid: The Lotus E23 Hybrid is a Formula One racing car which Lotus used to compete in the 2015 Formula One season. Lotus E23 Hybrid:  It was driven by Romain Grosjean and Pastor Maldonado. Romain Grosjean: Romain Grosjean (] ; born 17 April 1986) is a racing driver, currently racing for the Haas F1 Team.
i don't know