[seifrob]

If you ask me, the whole "Future is ..." is just advertising one proprietal solution.

There is not enough lithium to convert all petrol cars to electric
There is not enough platinum to make hydrogene cells for all cars nor not enough resources to produce so much hydrogene.
There is not enough corn to run all petrol cars on ethanol.

The era of dominance of one system is over, thats all. All the "alternative fuels" will probably gain more percentage, but I assume none will be as dominant as internal combustion engines were as alternative forms will be more cost-effective in some scenarios.

We will see more diversity. More electric cars, more hydrogen cars, more CNG cars, hopefully even some compressed air cars too.

Probably some unification too. I can imagine some "powerpacks" for trucks. Long haul in arctic areas? take this petrol. Long haul in mild climate? take this diesel. Need to do california city delivery? Than we offer you this hydrogene powerpack. Do you have your own CNG station? Take this turbine. All that fits our standard Cummins MotorMount(TM).

-- the only problem I see is political interference skewing the natural selection.