Billionaire Austin Russell is Founder-CEO of Luminar, which develops vision-based sensor technologies for self-driving cars. The 28-year-old dropped out of Stanford in 2012 to start his company after receiving a $100,000 grant from investor Peter Thiel. Luminar went public via SPAC merger at $3.4 billion valuation in 2021. Forbes named Russell as the world's youngest self-made billionaire in 2021.