By Kirk O’Neil GM and Ford may even be ahead of Tesla for one big reason. When those big winter storms or blazing hot summer temperatures knock out power for miles around, where can you turn if you don’t have a power generator handy? Some people might seek a more habitable environment in a public building or maybe a shopping mall to warm up or cool off while they are open. But what happens when they close down for the day? Other than having a generator to power up your home, there aren’t many options to getting the power back on until a utility company flips the switch. Electric vehicles have …