They're still being very cagey on power density. An interesting article but [far] [too] [many] [square] [brackets].
I'll believe it when it has been endurance tested for a few years. If it actually works, then yeah, that's awesome! We'll all be driving electric cars sooner rather than later. However, this wouldn't be the first company to promise huge gains in energy storage that wasn't able to deliver a workable product.