Hi guys, some help required for a concept that I am working on. I have a 2003 E220 AG and I am working on a design to allow use of my laptop in car, more commonly known as a CARPUTER! I will be installing a 7 inch Touchscreen monitor and will be running Sat Nav, MP3 (via FM modulator), Digital radio and email (via bluetooth to mobile phone) etc. The laptop will be positioned in the boot when required, in a custom fixture, where all connections from the interior will terminate. The query I have is whether or not it possible/practical to access the canbus diagnostic system? What software and interface would be required? Has anyone installed a similar system or have any useful info or warnings about the concept?