With parent company Toyota scrambling to get its third-generation Prius ready by next year and racing against General Motors and its Volt project to be the first to market with a plug-in hybrid, its Lexus luxury arm also is reportedly hard at work on its own variant of the new Prius, which it will most likely unveil in a concept form similar to the illustration pictured here at the 2009 Detroit auto show.Although Lexus has yet to have a dedicated hybrid in its lineup (it has hybrid versions of its RX 'ute and GS and LS sedans), the next-generation Prius, which is expected to be bigger and packed with more power, should be far more suitable for an upmarket offering.