It really depends on what sort of $h!+ is hitting the fan... If we are talking the NWO/federal government taking control and suspending the constitution... Any movement by road/vehicle would not work...

If you are talking collapse of the fiat dollar, followed by urban riots outraged that their multi generational sugar daddy's pockets are emptied, possibly looting surrounding areas... Then escape early by vehicle may be possible.

There are so many unknown variables...

It would be wise to have a plan B, C & D just in case.