This year’s “World Mobility Forum” exhibition in Stuttgart, Germany (April 15-18) will be the ocasion on which Jaguar will show off its XJ “Limo Green” hybrid study that was teased for the first time last September.

Making use of Chevy Volt-like hybrid power train, the 2011 XJ-based Limo Green comes with a range extending gasoline engine that was developed in conjunction with Lotus, MIRA and Caparo. The vehicle uses an electric motor producing 145kW and 295 lb-ft of torque for propulsion. A lithium battery pack offers about 30 miles or close to 50 kilometers driving range with a full charge. Once the battery is depleted, a Lotus-developed 1.2-liter three-cylinder gasoline unit kicks-in to produce enough energy to power it for another 970 kilometers.

The XJ Limo Green prototype is said to return a combined fuel economy of 5.0lt/100 km with CO2 emissions of juts 120 g/km.

Even though the study is billed as a one-off concept, it is believed that Jaguar will use the technology on its future production models.