Highlights
- Added new vehicle: Ibishu Miramar https://www.youtube.com/watch?v=PwsJX20C3lY
- Added new map: Utah https://www.youtube.com/watch?v=Sc9bDNAwt2I
- Physics core performance optimizations (10-50% more MBeams/sec)
- Added reversed depth buffer to solve clipping/flickering issues on levels https://www.youtube.com/watch?v=E7AD019TiOw
- Overhauled camera: new mode, options, customizability(all in Lua now) https://www.youtube.com/watch?v=HlnBgcOY_1Y
- CPU render optimizations, frame rate stability significantly improved
Full changelog (with lots more media) in our blog: http://blog.beamng.com/version-0-5-4-released/ (it's too big to put here completely)