It's a OLD IDEA.
We'll QUICKLY SEE the allowance of Time of such invention.
MANY PEOPLE have developed systems for Cars since the 30s that gave as much as 200 mpg, yet such discoveries were quashed by big oil.
Since Hydrogen IS A CHEMICAL IN WATER, why is this car considered so special??
WE as a Nation of OIL DEPENDENT People, are NOT READY for such discovery.