A nitpick on the math you cite: 400km in 5 min (300 sec) is not 2 km per sec. The bigger open question is what is the degradation penalty for 10C charging. Thi

A nitpick on the math you cite: 400km in 5 min (300 sec) is not 2 km per sec. The bigger open question is what is the degradation penalty for 10C charging. This doesn't matter for a demonstrator but is critical for consumer use.