Just spent 20 minutes in my plane flying down the road leading away from Camelot, just to see where it went. Guess what, it goes to nowhere. So I turned East toward Mort, following the southern border. Guess what, I ran into the Eastern border, also uncrossable.
The game is just a bunch of discontinous boxes, rather than a true world you can explore. I hope they have plans to complete the planet to make exploring something exciting, rather than just running into impassable zone walls.
The most fun I had today was reaching top altitude in my plane, switching to 3rd person zoomed way out, then deequipping my plane. That was a nasty fall, fortunately I passed out at terminal velocity, well before I hit the ground.