rutan, the "scientific minds" you posit are a waste of time and money. i speak from experience.
consider the logistics of designing and constructing distribution centres and fuelling stations capable of allowing mother to refuel her car with liquid ammonia (with a baby in the back seat). then think about the safety precautions necessary for fire brigades to handle a car crash. Gaseous Ammonia is effing toxic! liquid ammonia more so.
consider first the logistics of electric car recharging at service stations on the hume highway when current recharge times are of the order of 45 minutes minimum. then consider the electricity grid feeding that network of service stations.
to put it another way; someone tell i'm e's dreaming.