NIO - Wow - impressive numbers !I'm no engineer either - but I've been following battery development for about 4 years now - and I like the "solid state" concept - largely the chemistry (component costs) are cheaper, usually they are more energy dense with longer, useful lifetimes and more friendly to "quick" charging . For sure they are less challenged by thermal runaway (fire& explosion) than Li-Ion - what's not to like! ----- what is especially impressive with NIO is #1) they are being produced NOW --- #2) now they are just upscaling and refining an existing technology for longer distance etc. ------ #3) Standardization - allowing older models to be upgraded to longer range batteries moving forward ----- #4) While the battery swap capability - might not be something I would use in a personal vehicle - think of the benefits for the truck industry -- vehicles such as SEA is prototyping in Australia for utility uses - and last mile deliveries like in Mexico with Pronto/Potencia !