German architect Hermann Tilke, who designed the Buddh International Circuit for the inaugural Indian F1 Grand Prix, said it was a big challenge to get the track ready in time and he was afraid of missing the deadline.
Formula One management had approved two sites on the outskirts of New Delhi to build a circuit, IOA president Suresh Kalmadi said.
Force India drivers Giancarlo Fisichella and Adrian Sutil are confident of a better finish at Sunday's Bahrain Grand Prix.
F1 circuit designer Hermann Tilke took a two-day visit of the venues and would provide his feedback to F1 supremo Bernie Ecclestone.
Mexico's Caribbean beach resort of Cancun will host an annual Formula One race for at least five years starting in 2006.
Fernando Alonso passed a final medical examination on Thursday and will be able to participate in the Malaysian Grand Prix this weekend after the Spaniard missed the Formula One season-opener in Australia due to concussion.
Formula One had been braced for crashes and mayhem in Azerbaijan's race debut in Baku on Sunday but instead the drivers defied all expectations and barely put a wheel out of place.
Formula One rolls into Malaysia this week for the second round of the championship at the Sepang International Circuit, where talk surrounding the utter dominance of Mercedes will for once take a back seat to the belated arrival of Fernando Alonso.