(b)

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My condolences to JB Straubel and family.
Electric car musings from Teslas JB Straubel: Turns out containing a flywheel in an electric car is not a good idea (via shareholder meetng)
"Get really used to people telling you that what you're trying to do is impossible" - JB Straubel, Co-founder, CTO at Tesla
When do we get the JB Straubel news? $TSLA
Recycling EV Batteries More Cost-Competitive Than Using For Home Energy Storage Lux Research Echoes Tesla CTO JB Straubel