These people purchased land in the checker board manner = you only buy half the land to control it all. The theory that few can cross by thinning their middle to a zero point. Judge rules people can cross within the air space and not violate ownership.
This has been used to control full checkerboards while owning only half. As a result few people would buy these land locked squares - until now. Future people will see if they figure out to get vehicles across the same way. In theory an 8 wheel vehicle with zero springs/suspension could cross on a rigid strong platform as the unsprung rigid frame would bridge the space with 2 wheels, then 4, then 6 and then 8 = across - of course it would have Humvee on top that could be moved forward/backward to suit.
Owners could block with fences on their side, so your platforms would need to be higher. For that matter, a crane could work?