ATV with an oversized fuel tank,a boat an ultralight or a hot air balloon, take them as suggestions.
First off forget the highways. Either get above the road, around the road or use the river.
I recently picked up a used snowmachine that in a pinch will work as a bug out device. Out of most disaster scene movies trail bikes win the day.
So unless you have a Sikorsky Skycrane at your disposal to bring you car along and to get past the massive fleeing orgy of crazed armed soccer moms I would forget about using the roads, plan on living where you can use a river, or better yet a swamp with an airboat, even zombies fear crocs.
What about finding a ‘hideout’ somewhat close to home, away from the neighborhood (which will be burned to the ground) and away from the roads? Forming an army in advance of SHTF times, consisting of people in the neighborhood would be nice. Unfortunately, too many citizens are in 0bamabot mode and stuck in ‘normalcy bias’ mode. Not so sure they’d make great ‘soldiers’ anyway and would probably be a liability or even a turncoat when the food supply runs low. ‘Donner pass’ comes to mind.