One quibble: kWh is a unit of energy, ie the energy from a kW of power over a period of an hour. I think you meant kW if you're talking about power.
I've been saying for a while that I want to see this device spitting out orders of magnitude more output energy than input electrical energy, under supervised conditions, in somebody else's lab, over a period of at least a week (and preferably a month), with the lab being under the control of somebody of stature and complete independence, before I start getting really excited.
As far as using this for vehicles, its output is currently hot water (later to be steam). I could see this running a revamped steam locomotive, maybe a large tractor-trailer, but it would involve a lot of engineering before it would be viable for a small vehicle.
There will be a bit of engineering needed to put this into a vehicle, but the incentives will be enormous. Even if package size remains large due to a boiler or somesuch, it would make practical sense. Think of it this way: Would you rather buy a little econo-car for $15,000 and pay $3,000/year for fuel thereafter, or spend $30,000 for something the size of a Ford Expedition (albeit with the same passenger space as the econo-car) that has negligible fuel expenses thereafter?