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1.adjust the Fuel Tank Positions

2.Adjust the Size of the Fuel tank

3.two engines,one at the front and one at the back
Reference:http://en.wikipedia.org/wiki/Smart_Roadster At the brabus part

4.Automatic Gear box that uses a satillite so when your in a corner,you get the gear you need

like the Rolls royce Wraith

1./2. have been over that, doesn't really add to gameplay

3. .....

4. that one would be interesting to see, but how many production cars use it?

3.yeah .....

4.only the rolls-royce wraith(a production car)
dont know about the cars
the wraith uses a ZF "8HP90" 8-speed automatic transmission.