With the E-series going away, what for future Cs?

I haven't heard any definite cutoff date for the Econoline cutaway-it could be years. My thought is when it does go away, the time will probably be right. As fuel prices rise sooner or later there won't be much market for a 10 mpg class C. There will be more economical alternatives on these other chassis. Probably the larger sizes of C market will gravitate to the gas class A on the F53. Some of these are currently being produced at prices not much higher than a C.