I sort of hope it's a flop, and I wish the 7-series was doing worse. The long hood is OK, but as with the 7, too much is going on with the details. I dislike the interior, too. However, the performance numbers for a Z4 3.0 are similar to the Boxster and the price is lower.
It doesn't help that nearly all of the Z4's wheels designs suck IMO.
If a convertible isn't selling when it's a fresh, new design, can you imagine how few Z4s they'll sell four years from now?
Bangle needs to lose his job now, before it's time to finalize the E90.