One of my favorite options for a bugging out vehicle is the URAL side car motorcycle
this is very mobile on and off road,and can be pushed should it need to be by its crew, it can maneuver on foot paths and uses very little fuel but can carry a large number of people and equipment for its size, making it an ideal savaging and scouting vehicle, it can effectively be used for raiding and very mobile warfare.
other options include most 4×4 based double cabs – these can be built with gasifiers on the back of them to provide alternative energy sources should fuel be hard to come by.
and then there is the good old bicycle, pedal power is king when other power sources have been exhausted,
alternatively wind power ( as in sailboats on canals) and steam power can be used if the circumstances allow it