Doubles Anywhere v1.0
Makes double trailers available in 1.28+ for all of Europe, not just Scandinavia - the DLC is not required.
Any standard cargo that uses a curtain sider trailer should also have the option to choose a double, and they will appear randomly for quick jobs. No extra models or new skins added, it just unlocks the option for the default companies.
To unlock the hard parking option, edit config.cfg in the \Documents\Euro Truck Simulator 2\profiles\[profileid] folder, and change g_simple_parking_doubles to "0"
Not all truck service centres are designed to hold doubles, so drive carefully!