Google’s got a handful of plug-in electric hybrids that it’s been testing on the roads for over a year now through its employee car-share program. But since many Googlers just take the cars out for a local spin, the search engine giant recently decided to complete a 7-week test of its plug-is in real world driving conditions. Google is already investing $10 million into its RechargeIT plug-in vehicle program,and plans to make investments into green cars this summer through the plug-in program. The Google RechargeIT team also made this short video clip to explain what their 7-week drive test was all about.