GM Working On New "Cadillac One" Limo For Obama Now that we're going to have a new president, it's time for a new presidential limo-and GM is whipping up quite a doozy for the new Prez-elect. "Cadillac One" will be based off of the GMC Topkick, which you may remember as Ironhide from Transformers . For pretty obvious reasons, details on what exactly makes up the new limo are scarce, but it will most likely include five-inch thick glass (which can stop military assault rifles), cellphone jammers and blast-proof ceramics. But will it have backseat DVDs for watching Spongebob on? Guess only Malia and Sasha will know for sure. [Boston Globe via Jalopnik ]