Is that BMW the folding tin roof variety, if so, those and similar cars are so much more practical and usable in the increasingly wetter UK climate. You don't have to wait for a mohair hood to dry out following a shower, and a simple button tucks the hood away in the boot without getting out of the car, often on the move at lowish speeds. Roof up they are wind , water proof and a cosy place to be with the heater or air con on.
I enjoy driving Sue's SLK, did over 500 mile round trip to London the other day, it took it in it's stride and still achieved 63 mpg most at motorway speed limit with hours of driving in motorway congestion.
I wouldn't have even considered such a journey in a trad Morgan.