I have had my C30, with automatic geartronic trans, for about a month now. The acceleration is incredible and the shifting is smooth. It can orner at a fairly fast speed and stay in control. I tinted the rear hatch window and the two rear passenger fixed windows with a dark tint. I tinted the two roll-up windows with a lighter tint and the car looks even more cool now.
Squeeze a few more MPG out of the engine without reducing HP.