So, just over a year in with my MY13, I'm pretty happy with it. The single thing that stands out as below par, is the satnav. It got me thinking though. Could I without too much disruption, "plug" in a tablet or standalone computer that is displayed and controlled by the touchscreen already in place?

I've done a lot of searching, and only seen retrofit options where there isn't already a touchscreen in place. I'd just like to be able to effectively control my ipad or tab with whats there, in particular, to use a satnav that i like. Added benefits of course of using, say an android tab, would be multimedia usage, internet connectivity etc.

Any ideas? Toyota Rav4 2.0
Mazda 323F 1.6
Mitsubishi Space Star 1.1
Mercedes CLK 2.7
Mercedes ML230 CDI
Mercedes C-Class 1.8 Classic
Land Rover Freelander 2 HSE my13