I will do
It will probably be a push button at some point to control some aspect of the car.
I liked Geoff's idea of some kind of hybrid instruments so I have followed a similar route with a little bit of a change. I couldn't find any older dial casings to use that I could get for a reasonable price so I looked into making my own.
Taking some stock material and fabricating some dial cases. The material started off as some 5 inch 6mm wall aluminium pipe.
Plus a 5 inch dial trim ring for £4 on eBay and some left of 3mm acrylic sheet from my rear lights resulting in some dial casings.
The dial internals will be from the original z3 instrument cluster rewired so that they are on plugs. The odometer will also be removed from the original cluster and placed in its own binical between the two dials. The warning lights will be relocated to here too.