you didnt ask, however if your bummed that you cant retrofit it.
Theres a add that comes on the fest (usually to right), store called Infinite 360 or Bimmian (idk which). They have a HUD unit type thing, u stick to the dash anywhere you choose, it connects to the OBD port, and reads off a variety of info (plus somehow GPS info, but I think thru iphone bluetooth or something). Details are scant, but check them out. Its better than nothing i suppose.
BMW and Mercedes Build Beta Products!
Lexus build Release Candidate Products!
Why does this matter?
CAUSE EVERY TIME someone says Lexus has better build quality, one should consider what Toyota their Lexus Engine and chassis platform comes out of and how long that part has been tested in the real world!