My daughter came home from school with this. The teacher said the car runs on saltwater. It implies you fill up at the Santa Monica Pier. Of course not. The salt water is an electrolyte carrying energy that needs to be "charged". What is very interesting however is the fact that this means the energy can be stored in a liquid that can be filled into the car (exchanged) at a filling station. I imagine the electrolyte can then be re-charged. Much easier than charging a battery or exchanging a solid battery.
This is a good article that I could understand:
Salt Water Car? – Not So Fast | The Skeptics Guide to the Universe
You are probably asking how close this is to production. That I don't know. It looks one down side is the energy density - much of this salt water needed for a "fill". Just wanted to respond to the "runs on salt water" claim. Looking forward to this thread!
G