I recently had a hire car that had both needle and digital reading for the speedo. The digits were way better to read IMO. Needles are so last decade. :P
I picture something like: each reading in a box/circle with a background colour that changes based on the reading. I.E. All reading normal would be a bunch of green boxes with digital reading printed inside each. The background colour slowly changes to orange, then red (using shading in between) to represent the status. This means for the most part you never even have to read the screen.. (Except when you want to see all the cool things you're tracking :cool: )
Another thought is, that most people (like me) will want a "screen off" feature for night driving. Ideally the screen would come on if any readings hit pre-defined levels.
