I intrested to install arduino with servo to car with manual transmission.
2 servo for change gear
1 servo for clutch
1 servo for Gas (cruisecontrol and other)
1 encoder to gas
1 encoder to brake
1 arduino with sd-slot(or other storage slot) for fast change "firmware"
Sorry for my bad english ;-)
Being interested is very easy but all you want requires a very good hardware developed that can change the gear's and that needs to fit and get installed over the gear knob of the car and then from trial and error or with mathematics form the code to change the gears.
Not only that the breaks in a car and the clutch padel is something not fixed to one position I mean that with wear and tear the clutch may need to be pressed more and the breaks need to be pressed more and all that needs well sorted out programming because it may kill other's or eventually you.