Fiend on gun runs in Queens Man busted after fires at cars, hurts 7 - cops BY VERONIKA BELENKAYA, ALISON GENDAR and LEO STANDORA DAILY NEWS STAFF WRITERS "...Investigators said the drive-by maniac shot away from behind the wheel of a green, four-door Cadillac with a navigational device on the dashboard. "It's early, but it looks like some nut in a green car shooting at guys in red cars," a police source said. "It makes absolutely no sense."... "A 9-mm. shell casing was found at one scene but it was not clear if that was the only gun used."... Chronology...