Watch Bob Lutz drive the Volt

Bob Lutz at the Volt's debut

Tomorrow night CNBC will air the documentary "Saving GM", which includes Bob Lutz test driving a Chevy Volt 'mule' - a Volt underneath a Malibu body - back in May. I saw one these 'mules' back in April, and if you hate GM and think the Volt is vaporware, then I'm sure that this documentary, and a Volt-mule, won't change your mind. For hopeful believers, this documentary should be worth watching.