"Dave" wrote

The claimed range was (IIRC) something on the order of 40 miles - and
they said it would do 70 Mph. To me that makes for a practical urban
vehicle, whereas most of the electrics are not.
As others have said, what is needed is a thorough test by the
automotive Press. We'll see.

We'll see, indeed. The tank must be the size of an eighteen wheeler.

They should also publish how much energy it takes to pump up the tank. I
would expect to see unbelievably high numbers, if they are being honest.
--
Jim in NC