A few superchagers "move" when you change betwen 2015 and 2016 so...
In my opinion ideal would be near:
1. Zagreb - Lučko (140 km from Ljubljana SC and also intersection of E59, E65 and E70)
2. Gospić (199 km from Zagreb)
3. Split (224 km from Gospić)
4. Dubrovnik (229 km from Split)
In this...