Plug-In Priuses: Now from your Toyota dealer!

One of the challenges of converting your Prius to a plug-in hybrid--aside from the cost ($10K to $30K)--has been the garage-shop nature of the converters.

Hymotion, owned by lithium-ion cell maker A123 Systems, has now announced that its six initial installers include four Toyota dealerships. They're in Boston, Los Angeles, Minneapolis, and Washington, DC.

The conversion module still has to be ordered through the Hymotion website. But this now offers one-stop shopping for the Prius owner who wants to expand the car's full-electric running time, and juice it up from the wall socket at night--but doesn't want to haul the car to a third party.

One worry about the conversions, by the way, has been whether they void the manufacturer's powertrain warranty. While Toyota is clearly unhappy about any modifications to its very carefully engineered hybrid system, plug-in advocacy sites like Calcars report that many dealers either miss or ignore such conversions.

Another small step toward Plug-In Priuses, whether Toyota wants them or not ....

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