I'm not defending BMW but technology like navigation, back-up camera does not get a lot of R&D in their business model--it's about performance. Lexus, yes, you will get a better navigation. But that's like asking why a Lexus with a great navigation and Mark Levinson sound system doesn't drive like a BMW.

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2008 X5 4.8
Jet Black/Black Nevada/Dark Burl Walnut
Adaptive Drive
Premium Pack
Tech Pack
Climate Pack
Sport Pack
20" Wheel Option
Premium Sound
Sirius Satellite
Rear DVD Entertainment
Multi-Contour Seats
Comfort Access
3rd Row Seat
Heated Front Seats
Running Boards
3M VentureShield Paint Protection Film