My drive has a 13 degree slope - garage above street level. When Summon first came out it would not work on slopes greater than 10 degrees. Since I have not heard anything, I suspect things have not changed for my Model S with Hardware 1. But I have another Model S on order which will have Hardware 2 -- does that still have the 10 degree limitation? Finally - what happens if I try and use Summon to exit the garage? -- i.e. the car will be backing down hill.