There are times when you may have no choice but to leave your home/area (floods, wild fires, etc.)
Note about vehicle range. I am referring to if there's no outside source of fuel (ie. gas stations are closed). What you have today is all you will ever have.
1000 km = 600 miles
1km = 0.6 miles5km = 3 miles10km = 6 miles50km = 30 miles100km = 60 miles300 km = 180 miles