Sebastian Vettel and Infiniti Marketing Director Keith St. Clair talk with media at the GP America site. (Photo: GP America)

Sebastian Vettel and Infiniti Marketing director Keith St. Clair talk with the media in June 2012 at the GP of America site. (Photo: GP of America)

The Mexican and New Jersey races that currently figure on the 2014 F1 World Championship calendar will both be absent from the final version when it emerges from the FIA World Motor Sport Council in December.

Sources have confirmed that Mexico is definitely off. While Bernie Ecclestone would not officially confirm to FOXSports.com that the race has been cancelled, he made it clear that the challenge of building a new pit complex in time for next November had proved insurmountable.