The BMW owned MINI has had a lot of success in the US markets, but a technical problem with the MINI Cooper Convertible could change that. Owners of the convertible have complained about poor rear visibility while driving. The problem seems to be when the roof is up and when it's down. With the roof up the wide areas of cloth down the sides of the car block visibility. No washer/wiper on the rear window complicates the matter.
The problem continues when the roof is down. The bunched up cloth of the folded roof and the roll-protection bars above the back seats block a significant fraction of rearward visibility. It's possible that MINI knew about this because the convertible come with rear-mounted proximity sensors. Let's hope the next generation will solve this problem.