Tesla Inc. (NASDAQ:TSLA) said it has developed a long-lasting battery for its Semi truck, targeting one of the biggest barriers to electric trucking: vehicle lifespan. The battery is “designed to last a million miles,” Tesla Semi program lead Dan Priestley said Monday on the “Jay Leno’s Garage” podcast. Priestley’s claim directly targets fleet economics. Long-haul truck operators typically plan vehicle lifecycles around 500,000 to 1 million miles, making battery degradation a central concern for