With origins in developing advanced flywheel energy storage for vehicle applications, Williams Hybrid Power (WHP) was formed in 2008 when Williams F1 took a stake. WHP is developing a version of its flywheel system for use in Williams F1's Kinetic Energy Recovery System (KERS) to be introduced in its Formula One cars in 2009. Ian Foley is WHP's Managing Director. just-auto editor Dave Leggett interviewed him for Lotus Engineering's newsletter, proActive.