Bug-out early or plan to bug-in. Anyone in the hurricane's potential path who was keeping up with current events would have topped off the tank and packed their bags well ahead of the evacuation order; then you wait to see where it's really going. When the threat becomes evident, just leave -- before the evac order. Otherwise you are stuck in traffic rather than leading the first wave. Like me after a wildfire starts up to the east with a Santa Ana pushing it -- pack the truck and leave it packed, keep the fuel tank above 3/4.

The 1 hour thing is a nice academic exercise, but really unrealistic.