Yeah you can have accounts on it but a little different to usual. You launch a game from the home screen then decide who is launching it. For the most part it's then separate games - however Animal Crossing has one main game then the other accounts on the device simply access the same island like playing multiplayer - but in turns. It's fucking weird.
I've heard it mentioned that a passenger in the rear without a seat belt becomes a projectile in a crash and can kill or injure the person sitting in front of them.
My Mazda had a nice combination of touch screen which disabled itself when the vehicle was in motion and you could then use the rotary control instead. Was really nice and intuitive with entirely separate AC, heated seats etc controls.
Not really, not like the bowl has holes in it. Just pour it in until you hit the right amount like with everything else.