Well, I've committed to buy now. Will make the 4-5 hour drive (return) and hopefully come back with a scope. If it doesn't fit...I have no idea, courier it may have to be!
The OTA is only 1450mm long I think, it should fit in the front if I crank the passenger seat all the way back and put the mirror end in the foot-well...shall give it the dark-arts try!
I'll post my results, it may inspire other small car owners to buy bigger scopes
Now, if only I could fit one on my motorbike...