FAST COMPANY | Kimbal Musk was 25 when he and his brother Elon (perhaps you’ve heard of him?) sold their first tech company, called Zip2, for around $300 million. Elon poured some of his money into his next venture, which later
WALL STREET JOURNAL MAGAZINE | On a brisk winter morning, Kimbal Musk is an incongruous sight in his signature cowboy hat and monogrammed silver K belt buckle—his folksy uniform of the past few years—as he addresses a crowd outside a cluster