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A startup called Envia Systems, working on battery technology says it’s developed a key breakthrough technology that could one day lead to an electric car that has a 300-mile range and could cost around ,000 to ,000. Envia Systems announced test results that verify the company’s next-generation rechargeable battery has achieved the highest recorded energy [...]

I was just reading a BBC news story about the new electric Mini E. This little beauty does 150 miles on a 2 hour charge at 48 amps (presumably on 230V). A quick back of the envelope calculation (actually calc on my Windows Mobile smartphone) yields figures of about 7 miles per kWh, or at [...]