Chrysler is working on range-extended electric-drive versions of its Chrysler Town & Country minivan and four-door Jeep Wrangler SUV as well as an all-electric Dodge sports car, but it has not determined which to build.

AUBURN HILLS, Mich. -- Chrysler on Tuesday showed three plug-in electric cars, one of which will be in showrooms in 2010 as part of a plan to eventually use electric power in some form across its entire product line, according to USA Today.

The automaker has quietly watched General Motors tout its own plug-in electric Chevrolet Volt, unveiled in production form last week. The Volt, built on a new E-Flex platform that might be used for a variety of vehicles, also is to go on sale in 2010.

"We've kept a pretty good secret here, perhaps because we haven't tooted our own horns," said Tom LaSorda, vice chairman and president of manufacturing and business development for Chrysler. "We believe action speaks louder than words."