One of the newest types of hybrid vehicles on the market are the new plug-in version of hybrid cars. These vehicles can run completely on electricity and are able to be recharged through common household electricity. Much like when hybrid cars were first introduced, automakers are doing their best to ride out the recent obsession on the next step in environmentally friendly car technology; the problem with these vehicles are that they have not been proven to be feasible in real world scenarios yet. Some car makers are still focusing on other environment friendly concepts and others are working to bring inexpensive hybrid cars to dealerships and help more people take advantage of the improved gas mileage.