Cheating in competition aside, I had to laugh at this guy in the Guardian article -
A man in his 40s called Graham was cycling up a mountain in Mallorca this spring when he heard a strange whirring noise. It became immediately clear what it was when another rider breezed past, apparently without much effort. She had a tiny, performance-enhancing motor hidden in the frame of her bike. “I was livid!” Graham recalls. “She might as well have been riding a moped.”
He was livid! WTF did it have to do with him that another rider was using motor assist? They weren't racing. I'd love to do it to him myself, only this time with my feet on the handlebars and a cigarette in my mouth.