Check it out. Quite a good technical description of lots of the systems (and they liked the car!.)
http://www.edmunds.com/edweb/cook/m5/00.bmw.m5.rt.html?id=hprdt00bmwm5A%20
http://www.edmunds.com/edweb/cook/m5/00.bmw.m5.rt.html?id=hprdt00bmwm5A%20