Scarred by still-fresh memories of Katrina and spooked by Hurricane Gustav's rapid move toward Category 5 strength, an estimated 1 million residents fled the US Gulf Coast Saturday rather than brave the deadly storm taking aim at Louisiana. Residents took to buses, trains, planes and cars - clogging roadways leading away from New Orleans, still reeling three years after Hurricane Katrina flooded 80 percent of the city and killed about 1,600 people across the region. Gustav has already killed more than 80 people in the Caribbean, and if current forecasts hold up, it would make landfall Monday afternoon somewhere between the northeast corner of Texas and western Mississippi. That would spare New Orleans from a direct hit, but forecasters warned it was still too soon to say exactly where the storm will go. Residents were not taking any chances judging by the bumper-to-bumper traffic pouring from the city. Gas stations along interstate highways were running out of fuel, and phone circuits were jammed.