g48150, there are always lots of reasons why things CAN'T be done, but I'm sure somebody at one of the manufacturers will figure a way to make it work. I hope Ford is that manufacturer.
As far as what is economically viable, do you know what the exchange rate will be in 3 years? If gas/diesel is $5 a gallon is $3,000 premium a vehicle too much? How much will we lose if we don't do it?
Nobody said it was going to be easy!