QUANT e-Sportlimousine with nanoFLOWCELL drive concept wows EV enthusiasts but is it realistic?

[youtube=https://www.youtube.com/watch?v=RqLpqR0SPnQ]

The Quant looks like an amazing vehicle that has a 600km range and insane sub 3 second 4wd acceleration.  A couple of things to keep in mind though:

1. If you have $1M to spend you could build a pretty big/fast Nissan Leaf or Tesla Model S.

2. Not much has been said about the nanoFlowCell and it is hard to gauge exactly how much storage it can produce

3. I hope my pessimism is wrong and they build lots of these.