The next-generation MINI Convertible is set to bow at the 2009 Detroit Auto Show, with models arriving in dealer showrooms just in time for warm weather cruising next spring. The most noticeable revision on the new drop-top is the lack of intrusive roll bars found on the current model. Instead, the new MINI 'vert gets a single pop-up bar that deploys automatically in the event of a rollover. A multi-stage convertible top also is said to allow a sunroof mode as well as full-open motoring, although it still stacks on the rear deck in so-called "pram" fashion, neatly eliminating pesky rear visibility. [Autoexpress]