I ran across that on Youtube a couple days ago (thanks, lockdown). Looks interesting, but there are a few things that trip the "too good to be true" alarm - aside from the obvious FMVSS/CMVSS/UNECE compliance matters, such as turn signal size and separation, reflectors, license plate mounting, rear fender/mudguard, etc ... Concept vehicles often skip those, I get that.
As per standard practice with electric vehicles (actually, all vehicles, but EVs the issue gets brought to the forefront) - That range, and that speed, will not coexist in the same space and time, barring constant prevailing hurricane-force tailwind.
They claim power output 8 kW continuous, 14.5 kW intermittent. OK, fair enough.
My cbr125 also has around 8 kW. There is nothing magic about this electric bike's aerodynamics that would suggest it is any more aerodynamic than the cbr is (most of the drag is accounted for by the rider). 8 kW gives about 120 km/h top speed, being somewhat optimistic about it. So the "85 mph" (i.e. 140 km/h) is only happening using the "intermittent" power. OK, so be it.
Now ... It has a 4 kWh battery pack. So, if you use that 8 kW to go 120 km/h (flat-out at the "continuous" power rating), the battery is done in half an hour, 60 km down the road. (If it will let you use the "intermittent" rating to do 140 km/h, it's done in 40 km.)
The nature of aerodynamics (which is the biggest part of the drag) is that the power required goes up with the cube of the road speed. It so happens that the numbers here work out easily. If we go half speed (60 km/h) then it'll use one-eighth the power (1 kW) and now you can go 4 hours ... 240 km. Now, clearly, that's way optimistic, because in reality some of the drag is going to be eaten up by things that don't follow the speed-cubed relationship (e.g. tires), and if there is any hilly terrain at all, or starting and stopping, regenerative braking isn't going to be 100% efficient. So maybe the range (80 mi = 130 km) is possible if you go 60 km/h ... maybe 80 km/h if you are lucky.
Don't get me wrong, I really like the idea ... but it needs around double the battery capacity to get anywhere useful.
Li-ion batteries are easily around 200 Wh/kg now (the best ones are better than that), a 1 kWh battery would be 5 kg, a 4 kWh battery would be 20 kg, 8 kWh would be 40 kg ... still not excessive.