Porsche unveiled its first all-electric concept car at the Frankfurt auto show Tuesday. It looks like a futuristic version of the Porsche 911.

The German sports car maker boasts that the four-door Mission E will be able to drive roughly 310 miles on a single charge. The new model should take just 15 minutes to charge to about 80% of its capacity.

That would be significantly faster than market leader Tesla (TSLA), which requires about 30 minutes to reach the same level of charge.

Plus, the Mission E boasts a longer range than Tesla's Model S. It should run for 250 miles after a 15-minute charge versus 170 miles from a 30-minute charge.

Still, Tesla has a few years to close that gap.