I've posted it a couple of times, but this 1985 BBC news report on the
'moving statue of Ballinspittle' is certainly the inspiration for the
'driving Mary of Ballakreen'.
It's off the beaten track, not in the tourist guides, unremarkable in every way.
But for that, Ballakreen wouldn't bother a single map. Or a guidebook. There's only one entry, and it's less than an inch long.
In fact, rewatching them now, I've just spotted that footage from the original report is used to depict Ballakreen.
I encourage you to watch the full Ballinspittle report - but especially the final minute, where the reporter sounds almost exactly like Chris Morris when questioning the statue maker.
'And did [the statue] move while you were making it?'