I love the car and especially the electronic key system. However, I would likely not purchase another Lexus unless two things are changed. First, to lock the doors, you simply push the button on the door, which is easy to forget if you're in a hurry. The doors need to lock automatically after 30 sec-2 min., determined by the customer. It's far too easy to leave the car unlocked. Second problem is the very inadequate GPS. I have a $200 Garmin GPS for use in rental cars when I travel. It speaks street names for turns and gives traffic info (features found in various brands for years). The Lexus GPS has neither of these or other advanced features. Lexus needs to fix these problems.
The electronic key system and the overall quality of the car. See details above.
Perform a major upgrade of the GPS and add auto-locking doors. Keep the quality high.