"640 bhp (477 kW) and 4,400 Nm" ~very achievable.
"0 to 100 km/h (62 mph) in under 2.9 seconds. The Chreos will be limited to a comfortable top speed of 300 km/h (186 mph)." ~with above torque, and low drag also achievable. But sustained for how long?
"Silex is shooting for a remarkable range: 1,000 km (621 miles), and that's cruising at 125 km/h (77 mph)." This is the part I would question. ~Achievable, but would make the vehicle very heavy. Possibly very poor handling.
" charge an empty battery in 10 minutes, thank to some sort of modified cathode. This appears to be a proprietary system requiring a 10,000–15,000 V source. " ~Sounds extremely dangerous to end users unless charging remotely activated. Conceivable that the low current would substantially reduce heat during charging through some kind of modified battery bank. Would need to see this in action.
In summary, can see this vehicle being Lambo price if built.

I don't really like the look, but I suppose it is difficult to make a large vehicle look sexy. The Tesla S looks beter though.

Over three thousand pound-feet of torque?

go out and hire a new designer. clearly this one isn't working out. sounds like it'd be a good car though

Never.... Going... To... Happen.

Hmm, if the specs are even remotely achievable, the technology will certainly start being applied to more consumer obtainable cars. That part is exciting.
That said, while the design isn't completely horrendous, it does look like a genetic mutation - combination of Porsche Panamera, BMW 550GT, and an Alfa sedan.
Also, if those are really LED lit wheels, please, just no...

I guess if you have the money anything is possible

The Nissan Leaf claims 0.212 kWh/km. Let's say that at worst, the Chreos is half as efficient, that means a 0.42kWh/km. For a range of 1,000 km you'd need a minimum capacity of 420kWh of on board storage.
Some of the best Lithium Ion power density is at around 245 Wh/kg. This would give the battery a maximum weight of 1714kg.
So if the Chreos has similar efficiency as the Nissan Leaf (unlikely), the battery pack weight is at a minimum 857kg.
Just how heavy will the Chreos be? It might exceed axle load limitations on some road or bridges!!

Whatever...another business plan that will have to catch up to the reality of the Tesla and other already out of the gate products (none of which have managed to make a profit).
I see their design strategy though: move the wheels out to the corners and use a long, wide wheelbase to provide space for the battery pack(s) to breathe (and be surrounded by liquid cooling). With sufficient torque the Bentley-like weight will only be an issue if proper energy recapture is not utilized. Also, it may be that they have stumbled onto something that other designs have missed re: with enough gears weight may become an advantage in energy recapture.

and these high speed charge centers are going to be located where ? I don't see local gas stations buying into this tech for high speed charging of such a low number of cars.thats the problem electric vehicles face right now great for short trips but not very good for a long trip( top gear did an episode showing this and how hard it was to charge your vehicle on a long trip away from home)