http://www.grandprix.com/ns/ns29927.html
"Bernie Ecclestone is working on a contingency plan in case the F1 grid continues to dwindle.

If Marussia's bid to return this year should fail, the pitlane looks set to house just nine teams in 2015.

And with other teams including Force India, Sauber and even Lotus thought to be stretched financially, there is a risk the grid could fall below 16 cars in the near future.

One oft-touted solution is three-car teams, but according to Germany's Auto Motor und Sport, F1 supremo Ecclestone is working on another fix to boost grid numbers.

Correspondent Michael Schmidt claims Ecclestone quietly prefers the idea of a "second division" for the pinnacle of motor sport, "with 2013 Red Bulls and Mecachrome V8 engines".
"

why not make the teams (other then redbull) run a 3rd car for young up and coming drivers ?