Is Elon Musk Greatly Exaggerating Tesla's Battery Technology?

"Tesla's newest promises break the laws of batteries," writes Bloomberg. Long-time Slashdot reader rudy_wayne summarizes their report."Elon Musk knows how to make promises. Even by his own standards, the promises made last week while introducing two new Tesla vehicles...are monuments of envelope pushing. To deliver, according to close observers of battery technology, Tesla would have to far exceed what is currently thought possible." The Tesla Semi, which Musk claims can haul 80,000 pounds at hi