Hi,
I did the walk quite a few times last week, both via the road & the donkey track. I would agree that it probably wouldn't be suitable for a buggy, but i would also urge as many people as possible to make the trek because it really is worth it. Make sure you go up onto the roof for the fantastic view it gives you of Arillas & San Stef. I used to walk up the road way, & down the donkey track, took about 15-20 mins up, & 10 mins down.
Wetty