Back in the 1990s, when it seemed like electric vehicles were gaining traction with consumers, Costco did something unusual: the big-box retailer installed charging stations at many of its California locations. Now, however, those stations are being removed, and electric car fans aren't happy. According to Plug In America, Costco has offered no official explanation for removing the charging stations other than the Xeroxed signs taped to each that read, "Please be advised that this electric charger will be removed on August 15th, 2011. Sorry for the inconvenience." Costco's move seems curious for a couple of reasons. For starters, the...