"Attempts to re-enact transporting the blocks on wooden rollers or floating them on the sea have not proved convincing."
Sounds like they're talking about the Millenium Project. They weren't at Foamhenge evidently.
"The true test was when a colleague used his index finger to move me forward - a mere push and the slabs and I shot forward."
Bit of an exaggeration I reckon. You can't move a car like that. Unless it was on a slope. ;)
"The demonstration indicated that big stones could have been moved using this ball bearing system with roughly 10 oxen"
Well that's just cheating! Ten oxen could drag a blue stone if two were pulling the other way.....