HE drives a maroon Hummer with Belgian plates, wheel on the left. Not the full-on uber-vehicle like a Jeep with glandular problems, but some newer, smaller version that still manages to look no kinder, no gentler. It's almost as uncomfortable as the bigger ones, though the seats are upholstered with glove-soft skin. What she'd liked, all she'd liked, about the big ones had been the huge transmission hump, broad as a horse's back, separating driver from passenger, but of course their affect had changed entirely, once the actual original Humvee had become a fixture on the streets of New York.