This version of the small sports auto is also a preview of the Mission E, which will be Porsche's first all-electric model that is due to come into production in 2019.
The good news is that it previews the impressive technology that will be introduced with the upcoming electric Porsche Mission E sports sedan.
Looking like a pretty bog-standard pre-718 Cayman, the E-Volution comes with a graphic on the side which says "Turbo Charging".
Porsche has revealed the Cayman e-volution, a one-off electric sports auto based on the 718 Cayman at the at the Electric Vehicle Symposium, the world's largest industry gathering on the topic of e-mobility, in Stuttgart, Germany.
The new Cayman e-volution features the Porsche's new Turbo Charging system which accumulator-based fast charging system that can charge up to a capacity of 320kW per vehicle and has a charging voltage of 800V.
Unveiled at the Electric Vehicle Symposium (EVS) in Stuttgart, the Cayman e-volution boasts a 0-60mph time of 3.1 seconds - which is more than a second faster than a petrol-powered Cayman S - and a range of 124 miles. The Mission E will be capable of covering a range of over 500 kilometres, and will be able to charge its batteries to 80 per cent within just 15 minutes. The system is a collaborative development between Porsche Engineering and ADS-TEC, and is particularly suitable for use in areas where the distribution system is subject to power limitations. The battery-based system was created to supplement more traditional fast-charger networks hooked up to the grid, one of which will be built in Europe by 2020.
The German sports vehicle manufacturer will work in collaboration with Audi, BMW, Daimler and Ford to build a fast-charging network on major European traffic routes by 2020.