Will we be able to charge at higher speeds than 50 kW (I thought this was a limit with NACS, due to the Lucid 900v architecture).
Not an expert but this is what I got from social media:
NACS is a standard that includes all voltages from 120V, 240V, 400V, and all the way to 1000V, but it's up to the charger owner to choose what voltage to provide.
Newer cars have 800V charging capability, but hooking to lower voltages requires some voltage-boosting technology from your car, such as boosting your 120V household voltage to 800V for your Lucid.
To boost 400V to 800V, Lucid uses the Wonderbox. The maximum speed for boosting is 50kW speed. That is its specs.
Others, like Mercedes MMA, use a different boosting technology, so it can charge quickly: 350kW at an 800V station and 170kW at a 400V station.
GM Ultium would have 2 separate 400V battery packs. Parallel to charge at 400V station, and serial is to charge at 800V station. Tesla Cybertruck also uses this kind of trick and in real life, it can charge 250kW at a 400V station and 330kW at a 800V station.
Each brand of car chooses its own boosting technology. For Lucid, 50kW speed to boost a 400V station to 800V Lucid architecture is its specs.
It is doubtful that it will change anytime soon.