Exertris

Observing that traditional exercise bikes simply discarded the energy input of the cyclist as waste heat and sound, he conceived of a system to put the cyclist's energy to use as well as giving direct feedback of their performance.

The Exertris system combined the addictive qualities of video games with the health benefits of exercise.

Bill Gates show-cased the Exertris bike at the Consumer Electronics Show 2003 during his keynote speech.

The bike incorporated a gaming platform, an LCD screen, a gamepad and an arm-rest with a patented system that simultaneously raised the screen and arm-rest when the seat was raised ensuring correct posture in a single movement.

The high manufacturing cost of the bike at low volumes combined with a poor funding environment following the dotcom bust and 9/11 meant the company never achieved profitable status and was forced to close in 2004.