The leader of the UK's Liberal Democrat party is opposing a Tesla subsidiary being granted a license to supply electricity in Britain, calling Elon Musk a threat to national security. Tesla Energy Ventures, a subsidiary of Tesla, made an application [PDF] in July to the Gas and Electricity Markets Authority for an electricity supply licence to serve domestic and non-domestic premises in the UK. Elon Musk's electric buggy-maker has been playing on the margins of the power business with residentia...