The real interesting thing is that the all the automobiles and trucks in the world once only ran on either ethanol, electricity or vegetable oil. Then a new "alternative" fuel was introduced: Gasoline. So, the big question is why can't we do what we did a hundred years ago? Look to the wallets of the world governments and you'll have your answer.
In the meantime, the VX is a 4000+ pound truck and it was never designed with an eye on economy. Hybrids? Don't buy the lie! They still burn gas and people who get them tend to drive more since they get better economy thus using more gas and producing higher emissions than they did before they got the hybrid. But they are the media darlings and make everyone feel better when they tank up, and that's exactly what they were built to do and why the petroleum companies back them.
The answers are out there, they aren't secret, and best of all they've been right under our nose for a century.
Here's an interesting fact: Porsche got his start building electric cars starting in 1898. Yes, 1898. He sold over 300 including truck and lorry variants through 1906. Here's the first model, the System Lohner-Porsche (you can clearly see the hub motors on the front wheels)...
And we can't figure this stuff out now? We all know the answer to that one!