This dream puts its finger on no less than the central mystique of Car Talk. What is it, besides their infectious humor and mastery of mechanical minutiae, that makes these guys so wildly popular? I'd maintain it's a certain creative tension, deriving from a union of opposites. Here are these two mechanics, not America's most deified profession, who are also subgenius MIT grads---more like physicists, for godsakes, than greasemonkeys. Are they car guys...or cognoscienti? Makes your head swivel a little, which is what dreams love to do: tweak your assumptions and make you look at the world from a different angle.