I have to be honest I find a removable steering a bit worrying. What if someone forget's to stick it back on and drives off. There's always one!
Even worse what if you're driving through France enjoying the scenery and you point with your left hand to the left whilst resting your right hand on the door arm and you say to your wife "Look to the far left love, zebras!" - then you look to your left hand pointing to the left and you can see you're holding the steering wheel with the same hand and then a roundabout approaches. No thanks. Something like that would happen to me.