Brain waves move wheelchair says Toyota :

Toyota Motor Corp says it has developed a way of steering a wheelchair by just detecting brain waves,
which is among the fastest in the world in analysing brain waves.
Past systems required several seconds to read brain waves, but the new technology requires only 125 milliseconds - or - 125 thousands of a second.
Research into mobility is part of toyota's largest strategy to go beyond automobiles in helping people get around in new ways.