Synchronized wheelbarrows. "The idea then came to fruition over a few beers in the village pub."
Meet the 'Arrow Barrows' - the Cornish Wheelbarrow Wonders, in The Cornish Guardian, August 12, 2015
The article is very sweet, and has links and a photo of the group's extensive, costumed back-up squad.
I haven't found video, but if anyone does, please let me know!
Addition of hot links from a comment below (added here February 8, 2016):
Check out www.vimeo.com/48818263
Their website is: Www.arrowbarrows.wordpress.com