FYI some technical info on these BUS systems:
technical specs for CAN-bus in BMW e90/e60 series:
http://www.interfacebus.com/Design_Connector_CAN.html
specs for MOST:
http://www.interfacebus.com/Design_C...omotive.html#a
http://www.telos.de/most/

if anyone got links for the i-bus and the MZ4's electronics/communications systems please post...