This is Fliegl Animal Transport – Single & Double trailer mod.
And here is update 1.1 mod by Jazzycat for American Truck Simulator, 1.29 tested.
Freightliner FLB Truck Mod Edited by Harven v 2.0 for ATS 1.29 version.
This is Longer Trains Mod 2.1 for American Truck Simulator.
And here is the new version of Coast to Coast Map mod for ATS.