An anonymous reader writes: German automaker Porsche has made its first foray into electric vehicles. On Monday at the Frankfurt Auto Show, it unveiled a concept car called the Porsche Mission E. Its 800-volt drive system can take the car from 0 to 100km/h in 3.5 seconds. The high-voltage charging system lets it gain 80% of its battery capacity back within 15 minutes. They claim a driving range of 500km on a single battery charge. Porsche said the car was not a response to the Tesla Model S, but the two will likely be direct competitors when the Mission E goes into full production. That will happen "within the next five years."