Just a Health & Safety tip.

[AzNMpower32]

I actually figured this out at least 2 years ago, but I guess with our health & safety society, it's probably a good idea to let folks know about this.

In my 2004 X3, with the key in position I, the automatic shifter lever can be moved into any position by simply pushing the shifter button. There is no interlock, nor do you have to push the brake pedal. Thus, it is a good idea to pull the parking brake whenever you park because the shifter can be moved into N. The shift interlock is only engaged in OFF or key position II.

[Supercourse]

That's interesting. When I just want to get my X3 in or out of the garage without needing to drive anywhere, I am in the habit of pushing it (level ground, of course). This avoids the needless wear of a cold start. Also I read that the X3 is one of those few vehicles that can get re-starting problems if run briefly from cold and then shut down (various sensors and computer get confused).
Maybe I used to do this with the key in position II, but recently I have noticed what you have. While it simplifies things, it does seem odd that the interlock can be bypassed. I suppose the risk is low, because the rationale for needing an interlock is probably based on when the key is out, or in the ignition on position.