Bernie Ecclestone has confirmed that both Caterham and Marussia will miss the US GP – leaving a field of just 18 cars.
Speaking to Reuters, Ecclestone said: “Neither of those two teams are going to go to America.”
Freight was due to embark to Austin today, and missing the US race will mean missing Brazil as well. It remains to be seen whether either team can survive the current crisis and make it to Abu Dhabi.
While the focus all week has been on the future of Caterham, main rivals Marussia have been facing similar financial difficulties, and the situation has obviously been made more complex by the Jules Bianchi accident.
It’s long been rumoured that Marussia investor Andrei Cheglakov wanted to see a car on the grid for the first Russian GP, and thereafter he would cut off his funding.
It’s understood that under what used to be called the Concorde Agreement teams can skip three races, so in theory both could miss the rest of the season and still survive in some form next year.
Adam Cooper's F1 Blog 
Would Caterham’s and Marussia’s demise save Sauber’s future?
How much is Marussia’s current position / points worth in prize money?
it going to be a couple of Million, so they only got to hold on untill the end of the year to get that money
Does skipping these races protect the $ they’ve already earned for their season’s result?
I suppose Marussia will consider that there is no threat from Caterham and hold their breath that Sauber don’t get lucky. Although with Renault teams probably needing to take penalties for excess power units Sauber may luck into a points position.