QuantumScape a company that makes batteries for electric vehicles, gave a live demo Monday that clearly made investors happy. QuantumScape and “PowerCo SE,” Volkswagen’s battery company, took the opportunity at Munich’s IAA Mobility auto show to show how QuantumScape’s solid-state lithium-metal batteries powered an EV. “This demonstration represents a significant advancement in battery technology, showcasing the first anode-free solid-state batteries to move from laboratory discovery to real-world vehicle,” said QuantumScape in a statement.