No idea what car that armrest came from, but it's not Lexus. Looks like it's bolted to the trans tunnel behind the standard centre console too, so if you take more than two rear passengers at any time, that could be an issue; there's not a lot of room for three in the back as it is!
That's mine! :D
Yes, it does ;eave the cubby hole "open", as the standard fitment replaces the existing cubby hole with lid; you remove that compartment, and the armrest fits inside the result hole, with a shroud to make a smaller cubby hole in the remaining space. Very little to see from outside the car, and I wouldn't leave any valuables in the car anyway (if I needed to, it'd be in the glove box, which can be locked, and is more than big enough to take anything you could possibly leave in the centre console cubby hole). Mine just has a lighter, my handsfree headphones, and my house keys live in there when I'm driving.
Thanks. I hear that.