San Diego Improvement Project Mod American Truck Simulator Mods | 20 Nov, 2016 San Diego Improvement Project Current version: 1.0 Compatible Game version: ATS 1.5.0 It adds Interstate-8 and I-8, I-5 Intersection to San Diego. Also south of San Diego has been improved. This map mod is NOT compatible with any Mexico map mods. Author: elitegamer0611, SCS Tags: ATSSan DiegoHaving trouble with the mod? Check the comments for a solution and report any new bugs you find.