Chrysler LLC is taking giant leaps forward in its mission to catch up in the race to make the car environmentally sustainable. Having only just brought its first hybrid vehicles to market, it’s now forging ahead with range extended electric vehicles, and we’re about to see its very first.The group will show three new examples of these battery cars as concepts at the Detroit show in January; they will be the Chrysler EcoVoyager, Dodge Zeo, and Jeep Renegade. All three concepts use lithium ion batteries as a primary power source. The Dodge Zeo runs on battery power alone, in fact, and is good for 250-miles between charges; the Chrysler EcoVoyager runs a hydrogen fuel cell as a back-up to the battery pack; the Jeep Renegade, finally, has a small diesel engine to add to the car’s operating range.If all this sounds strangely familiar, it’s because this is exactly the position that both General Motors and Ford were in 12 months ago – both were preparing to show plug-in hybrid cars at the Detroit show.GM’s system is called E-Flex and has brought us hydrogen-, petrol- and diesel-electric cars already; Ford’s version is known as HySeries, and has featured in the Airstream concept and the Ford Edge SUV.Ford has yet to show a plug-in hybrid backed up by a conventional combustion engine, but all the same, Chrysler LLC’s got a lot of ground to make up. That’s why it’s about to show these first takes on the options for the electric car of tomorrow.