I absolutely expect to have my two labs in the back of my S. I also have a "beater" - a '05 Escape Hybrid, but for trips to my place in VT (180 miles) I'm taking the S.
The big question now is should I get a HPC for both houses?! I'm banking on a supercharge station on 91 as a back up plan.
How long to you stay at the place 180 miles away when you go? If it is at least overnight a 50A outlet would work fine.