Refueling is not expensive.
It definitely doesn't need tens of millions of dollars of R&D. The perfectly working fueling machines of 2009 are probably sitting down somewhere rotting away.
All the FIA need to do is have a standard fuel rig like how they have a standard tyre. Problem solved.
A fuel rig is nothing compared to any of the technologies that you mentioned. A rig is basically a pump with a controller. Shipping costs are another trivial issue. If they want low consumption and emissions reintroduction of refueling is the cheapest solution. The qualifying format can be low fuel qualifying just the same, you just chose your starting fuel weight; this is another matter though.
Refueling does not set the wrong incentive. The incentive is reduced consumption through weight.
What would you rather? Put a month's worth of fuel in you green road car making heavy and cumbersome, or refuel it once a week and have a light car that puts less load on the engine? The same logic applies to F1. A short fueled car is faster and lighter and puts less load on the engine and tyres. If you want less drag you can have a smaller tank to help that. Weight saving is one of the fundamental pillars of fuel efficiency, and has a direct application to road cars.
About the fuel cell, i am speaking of liquefied gas or liquefied hydrogen.
i see what you are reffering to though this right?
[youtube]
http://www.youtube.com/watch?v=oy8dzOB-Ykg[/youtube]
i was reffering to combustion of hydrogen:
[youtube]
http://www.youtube.com/watch?v=LjWCXD4P3XQ[/youtube]
this can be done with fuel mix.
A gas turbine is more efficient at higher speeds, it's the low speeds that give the lag and fuel problem.
However my solution uses batteries and an electric motor that drive the gearbox whenever the Turbine is under it's operational speed.
A piston engine cannot compare to a gas turbine in any metric. If we really want to push the bounds of technology, F1 has to follow the path of aeronautical industry; dump the pistons and reach for the turbines.
We will still have the wow factor in terms of the sound and acceleration and the cars would gain power with speed. There are also more opportunities to scavenge heat energy off of a gas turbine.