Lane Change warning is OK but not 100% accurate, it can be a pain when negotiating a roundabout etc.
Lane Departure Warning is a waste of time, the vibrations are so subtle that you hardly notice them in an M6 anyway, when you do, it's just annoying!
Congrats on the car, we seem to be getting a few more in the UK now, or at least on the board! Still only 159 in the UK, someone had one built in PERIDOTGRUEN-METALLIC (W81) yesterday. This is the only picture of it I can find.
That might be quite nice, might not!