"With the top up, the cabin ambience — quiet and composed, elegant, as solid as a bank elevator — is indistinguishable from that of the Coupe. With the top down, life is equally good. With the windows up, the seat heaters on and the wind-blocker in place, you could drive al fresco to a Green Bay Packers game. Or a Sun Devils' game. Among the dazzling tech trinkets is an infrared-reflective coating on the leather upholstery that, says BMW, reduces surface temps by nearly 40 degrees." more.