It's a smooth one, though, that opens fully with the touch of a button and closes the same way. There is moderate wind noise with it open. BMW's visors are solid and include lighted mirrors, but no extenders to block the sun when at those odd spring and fall angles. There also is a little storage bin between the front seats, but it's quite tiny and a bit far behind the elbow. The glove box is pretty large and the trunk size has been increased to make it more usable, although the rear seats are not split and can't be folded down.
Most cars offer that feature now.
Gas mileage is surprisingly good for a performance sedan. The EPA says to expect 21 mpg city and 30 highway. Premium unleaded is the fuel of choice. To me, this is as close to legal racing as a person gets without having to spend considerably more. If you have the money, sure.