Say guten tag to BMW's latest cabrio. It's the droptop version of the 1-Series that debuted earlier this year. We've already seen the press shots, back in October. But after all those months, BMWs come up with a suitable US base price of $34,000 to start. That's for the 128i; no word on the 135i convertible, which is expected in Fall 08. In other news, the back seat is the size of an infant's bathtub.