I've got the thumb size USB one and I have it in my ashtray.
Mine is a typical mini-sized, wired keyboard.
The location configuration is as follows:
Driver only: passenger seat / backseat
+ 1 Pass.: backseat
+ 2 Pass.: backseat
+ 3 Pass.: atop or beneath the middle-divider in the backseat / passenger footwell
+ 4 Pass.: passenger footwell
where did you get that keyboard?
is that the foldable one? and is that wireless too?