Version 2.4 - added new truck Western Star 49X

Pack adds in traffic 37 american trucks.
All standalone.
Works on any maps.
Compatible with all my packs.
For version 1.38.x
Included two versions: american trucks only in Africa, Russia and Brazil and american trucks everywhere.
For american trucks only only in Africa, Russia and Brazil you must have in mod folder 2 files:
american_truck_traffic_pack_by_Jazzycat_v2.4_base.scs
american_truck_traffic_pack_by_Jazzycat_v2.4_def_sel.scs
For american trucks everywhere only 1 file:
american_truck_traffic_pack_by_Jazzycat_v2.4_base.scs