The folding hard top is a dying breed. The new Z4 will be a soft top as will the next 4 series, Bmw bods have already publically stated this so there's no mystery there. I can't actually think of any highly regarded sports car that's ever had a folding hardtop and there's good reason for that. Too many drawbacks, too many compromises. 5 to 10 years from now they'll be none or just the SLK. Shame because the concepts great, best of both worlds but the reality is the execution has been such a let down. At the same time the modern fabric roof's are so damn good, apart from the vandalism aspect, the folding hardtop has no real benefit.