Re: The Thousand Dollar Challenge
The solution is already here.
At this point it is not batteries, and billions have been spent over the last half century to try to make the magic battery or capacitor. They have succeeded in the space program with flywheel batteries, but they are much too expensive as well as not practical for cars.
The capacitive storage of inertial variations in normal vehicle operation is the key to success. It has to be cheap and last at least 10 years.
Comparing the efficiency of powertrains without inertial recovery and reapplication to those with that ability, is like comparing the range of a pure electric vehicle to a Prius driven by Wayne Gerdes. Electric is not efficient enough for that purpose.
In fact, if you consider inertial peak leveling by short term high capacity storage with high efficiency, you have created the potential for a self hypermiling vehicle.
When you can show me a car that can climb the most severe grades and get 100 MPG, at 60 MPH, under normal circumstances as well as have a minumum of 500 miles range, then you have the winner. It must carry 5 passengers in comfort and require no extra driver imput compared to current cars.
At this point I don't care what you use for fuel as long as emissions are at current levels. The fuel issue is another topic.