The map has been updated from a sketch to a map... that's not a sketch!
The entire thing has been rebuilt, so while the concept some of the map may be familiar, it is all new polygons and pixels when compared to version 1.
Higher ceilings!
Exploding barrels and mines!
Larger spaces to push a tank through!
More custom signs and fences!
New track layout!
A new poster to tell you what to do!