Adds Busses from The United States and Canada to MTR4
Added:
XD60 and XT60
Fixed:
Wheels on the XD40 and XT40.
![[MTR4] American Bus Pack](https://cdn.modrinth.com/data/LxRbtmkT/d6c13327df7ef355bdee4cb080f739b3d6081454_96.webp)
