GM developing 300km-plus EV to rival Tesla Model S

General Motors is developing an electric vehicle to challenge the Tesla Model S, with a 300km-plus range and a more affordable price. US media reports GM�??s EV will have a single-charge range of over 320km and be priced �??around�?� US$30,000 ($32,000). Tesla�??s luxury Model S starts at US$71,070 ($75,900) before federal tax credits in North America and offers its owners a335km� range from