Lexus- the Lenny Kravitz of automakers. Like Lenny is derivative of the Beatles and Jimi Hendrix, Lexus first copied the MB S class for the first gen LS, now they are mimicing the E60 for the latest LS. Look at the rear pic, as Bavarian pointed out, and the profile pic. Nearly identical silhouette.
That said, if you're gonna copy something, copy a Rembrandt, not a finger-paintin. Good on them for recognizing the best design.
JV