This is my 2nd LS. My 1991 LS 400 lasted 16 years/350K miles. My 460L Exec Class has 4 seats, including the recliner with ottoman and massage. It also came with the nav system, Mark Levinson sound, DVD drop down screen. My brother-in-law was in the recliner watching a movie through the wireless headset and getting a Shiatsu massage, said I needed to have a chauffeur's hat. Many more electronic controls than my old LS, but they are laid out in a simple way and pretty intuitive, though reading the encyclopedic manual is very useful. Wind noise issue seems solved for the later built cars (mine was built in 7/07), but test drive the car you are buying.
Parking assistance (it shows you when you are getting close to another object) both visually and aurally. Radar cruise control which slows you down if you get too close to the car in front (adjustable for distance).
Nav system and many audio selections can only be made when the car is stopped.