able to start without key fob in...
 

Had mine in for service....got a loaner and it was running but the rep handed me the keys. I first thought something was wrong with it. I got he X5 back today and tried it, and it worked.

pretty cool...

if within a certain time it was running, it can restart as well if I recall. Not sure why they'd want this as it'd be a nice carjacking feature... can't prevent it by running away with the keys. :D

Ya after you turn off the car, if you put your foot on the brake and press the start button within 10 seconds (I think), it will start again. This is *without* comfort access.