I'm sure that it will be possible in the future. I'm also interested in getting Automatic Tailgate. We just have to find X5 with Auto. Tailgate already, and look closely for different part i.e. power unit, motor, or etc.

__________________
E70 MY08 3.0si Space Grey, Sport steering wheel, Titanium Grill, Titanium lower grill, Sidestep, and more to come

E60 MY05 525i SE Silver Grey, M5 mirrors, Hartge Classic II 20", Eibach Spring, M Sport Trunk spoiler.