It's a ram mount. No drill vehicle pedestal with spring loaded tab tight cradle. The seat mount pedestal isn't very "shake proof" but with some additional bracing, its good enough....and its been tested in some pretty atrocious conditions.
No affiliation to the sellers above, just a quick google of links to the product i'm using. My Tab only just fits in the cradle a 10" lenovo. They have other cradles that allow a bit more room, but they are more exe and the spring loaded cradle is a breeze to instal and remove the Tab. I've never had it fall out either.