The interaction of the separated hydrogen and oxygen atoms is powerful but safe - and that hydrogen-oxygen interaction greatly multiplies the strength that your engine can deliver from a gallon of fuel.
It additionally predicted that a majority of sedans could have Klein gas, Brown's gas, hydroxy gas, water fuel, call it what you will, fitted as standard by the whole year 2030. That barefoot running is somewhat specious prediction, but could turn to be true. Not that it fails equally well on all sorts of car, truck, lorry or boat, be they Industrial Diesel Generator or gasoline powered.
Portable generators can simply be moved around from site to site. This gives you the freedom to be able to the generator to any location an individual need power. Portable generators tend to be smaller and so don't produce as much power for as long.
The tank capacity could be the number of gallons that the tank can carry. The larger the tank the larger the pressure can be maintained.