^ I'll have to say when I test drove a Lexus 400h at their event, I couldn't tell if the engine was even on when I stepped in. The X5 isn't as quiet but it doesn't take much ambient noise to not hear it. They've already said they thought it was off by pushing the button. As for being preoccupied, I've actually been absent-minded enough to hit the P button while still rolling slowly up the driveway. I meant to hit unlock along my usual 3-button passageway to getting out of the car but it was a brain fart. We can't all be perfect 100% of the time.

__________________
'08 X5 3.0si - Alpine White / Saddle Brown interior
Specs: Sport Pkg, Premium Pkg, Tech Pkg, Comfort Access, Aero Kit, Style 433 staggered 20s on Conti DWS
Mods: Carbon 35 tint, LED angel eyes, GP Thunder 7500k fogs, H&R 20mm/25mm spacers, clear reflectors, gunsmoke-tinted taillights
Coded: Digital speedo, windows/sunroof/tailgate close via keyfob

X5 pics at Flickr