Grid is not infinite

If you look at the screenshot, you'll see my car which dramatically killed itself after crossing over the edge of the grid, which is the wall in the distance. You don't fall over the edge, you just bug out and stuff.

 

My car just pinged of into space followed by an endless drop..

 

Endless fall? In the screenshot, my car stopped at ground level.

 

But mine had quite a travel behind it returning after his space trip.. i guess it just clipped the ground

 

It's possible.

 

No map in the game is infinite, they all have a set size that the creator decided to use. At the edges of every map there is a wall of sorts that will destroy your car.

 

Is it required that a wall of some sort be there? Will the game eventually crash if there isn't?

 

This is just how the engine works, there is no way to create a map that does not have a set size. You can create a map that is larger then the grid map, but at a point you start running into other issues.

 

An example of an issue being...? Extreme map file sizes? Rigorous lag?

 

Give this thread a read:

http://www.beamng.com/threads/5489-Idea-for-airplane-maps?highlight=airplane

 

This makes sense from experience. Thanks for your help!