I thought we learned our lesson with Hydrogen?

Does any know what the dangers are ,when compared with regular gasoline? (or other fuels).

( I admit I'm uninformed and judge all Hydrogen vehicles by the fate of the Hindenburg.)

That's no bike. It's got 6 wheels!

Neat design, though.

In terms of exploding or burning, probably not nearly as dangerous as gasoline. The biggest problem with it is that, since the molecules are so tiny, it's very hard to store and transport without it leaking away. Also, the standard procedure for getting hydrogen from water (electrolysis) requires considerably more energy than you get out of the hydrogen, so that's a problem. Still all that aside, if you use power from a nuclear reactor to crack the water to make the hydrogen, you have a nearly unlimited supply of a portable, energy-dense, very clean fuel. Researching and refining its use as a fuel is a Good Thing.

if it's such a bulky machine, why not make it regular bike sitting position with an encloded cockpit? Better visibility and warmer in cold Swedish winters.

Have you ever ridden a 10+ speed or mountain bike for hours on end? Recumbent bikes are far more comfortable, and can facilitate greater pedal power because you have something to push against.
I couldn't figure out why there's no cockpit or fairing. That seems like a design flaw to me....or a planned upgrade at extra cost.

From the looks of it they're still in early prototyping/proof of concept phase.

Comment hidden because you are ignoring dag.(show it anyway)

Neat. I want one.

Hexacycle?