Few words about BMW 7 series:
The 7 series stands for BMW flagship executive sedan. Most of luxury accessories, car parts innovations and new technologies (such like iDrive electronic controller or Hydrogen powered vehicle) are introduced in 7 series and then migrate in the 5 and 3 series.
BMW offers wide range of engines for 7 series: diesel, straight 6, V8, supercharged V8 by Alpina, V12. Additionally, the 760Li (luxury long wheelbase version) is also made in a bulletproof version.