Could US industry support the large demand of E85, or Hydrogen, if they became the primary methods of fuel?

Lets say that its 20 years later (or whatever) and cars in the US are fueled by E85. Would we be better off, cost-wise, then we were buying gas? That is to say, could the US farming industry support a large demand of E85, and keep the prices low (and by low, I mean under $2).
Same question for Hydrogen: could it be produced with such volume to keep the prices low enough?
I guess the overall question is, are these alternative fuels capable of being more financially feasible then gas is to us now?

What type of bearing is used to support the connecting rod on the crank pin and the wrist pin in high rpm two-

3. What type of bearing is used to support the connecting rod on the crank pin and the wrist pin in high rpm two-stroke engines?
A. Roller bearing
B. Plain bearing
C. Needle bearing
D. Bushing

4. What is the purpose of the fibers in grease?
A. It’s the actual lubricating element in the grease.
B. It prevents the lubricant from evaporating.
C. It traps the lubricant and holds it in suspension.
D. It thickens the grease.

5. Which type of outboard motor cooling systems is a variable volume system?
A. Revolving cam pump
B. Plunger pump
C. Impeller pump
D. Pressure vacuum pump