Yesterday I made my first real test with the OBDuino connected to my car, and it worked
Here is a picture at idle, note that the display is in L/h because speed is 0.
I also made a small movie, but in my code I had a problem with a value being signed so sometimes the fuel display goes negative (I corrected it in the trunk code).
Unfortunatly it seems google resized the movie to 320x240
and I was taking it with my digital camera while driving so quality is not very good, but at least it shows you the thing. I display fuel consumption, speed, RPM, load.