If you get a few Zs want to go it might be an idea to club together and bring a suport vehicle like a transit van to carry all the equipment and camping gear , would also make a good towing vehicle should the worse happen
(i think this would be a good idea for all the minis on the trip not just the Zs)
Zs do tend to have a totaly differant set of problems to the more standard minis
We're wondering about bring the family wagon - a Subaru Legacy Estate to carry the gear. And taking turns driving the cars. Dunno. Means paying for 2 cars.