Hertz has been offering up electric vehicles amongst its fleet of rental cars, and now it's getting ready to pull the plug. The company is teaming with Evatran to test out the those cool little Plugless Power discs, installing some at its corporate headquarters this month. Hertz, along with a number of other companies will be logging "feedback on daily usage routines, user interfaces, and any additional functionality needed." No word on when such technology might see wider distribution.