Resistance adjustments are instant, making it easy to replicate everything from a flat or rolling hill course, to the coast down a hill after a hard climb.

ENGADGET: Wahoo KICKR Power Trainer lets iPhone cyclists feel the simulated burn (video)

The stone is still rolling down the hill.

ECONOMIST: Wolfgang Sch?uble, Germany��s Sisyphus

On a stretch of 280 rolling acres in Mokelumne Hill, California, Ajamu Al-Rafiq races toward one of his 400 cashmere goats.

FORBES: Magazine Article

On a stretch of 280 rolling acres in Mokelumne Hill, Calif.

FORBES: Magazine Article

"It's important to stress once again that without imposing the extra health and safety measures, which all come at a considerable cost, the Cooper's Hill Cheese Rolling Event will not go ahead and eventually the tradition would die, " Mr Jefferies said.

BBC: Ticket prices for new cheese rolling festival announced

It's like Sisyphus rolling the ball up the hill, a thirst that can't be quenched.

CNN: Why ambition could make you rich, but not happy

As hopeful as the industry may be, pushing LOST to increase oil supply is ultimately akin to Sisyphus rolling his rock up the hill, doomed to watch it fall to the bottom yet again.

CENTERFORSECURITYPOLICY: LOST oil prophets

If the story of chilli is the story of Texas, the whole book is neatly abridged in the Hill Country, the rolling uplands north of San Antonio.

BBC: The perfect chilli con carne in the heart of Texas

Others include the Rolling Stones plugging Rice Krispies in 1964 and Benny Hill backing Schweppes drinks.

BBC: NEWS | Entertainment | Archive saves film and TV adverts

For example, the rolling Berkshire Downs, the Vale of White Horse with its prehistoric horse hill figure, and notably the Rollright Stones, near Chipping Norton in Oxfordshire.

BBC: Oxford

This is a rolling scrubland, and in fact, the word Puuc comes from the Maya word for hill.

BBC: The forgotten ruins of Mexico��s Ruta Puuc