Fisker hasn't had what you'd call the best year so far, but it may have found the ticket to turning its hybrid vehicle business around. Meet Tony Posawatz, Fisker's new CEO -- and, until just weeks ago, GM's Vehicle Line Director. Despite being the second new chief executive at Fisker since Tom LaSorda arrived in February, Posawatz needs little explanation for his sudden rise to power. He's an original member of the Chevy Volt leadership structure and could very well know a thing or two about developing a hybrid car from start to f