The Williams-Ford FW07 was a ground effect car designed by Patrick Head for the 1979 F1 season. It was closely based on the Lotus 79. The car was small and simple and extremely light, powered by the Ford Cosworth DFV. It had very clean lines and seemed to be a strong challenger for the new season, but early reliability problems halted any serious threat for the title. The car made it's debut partway through the 1979 season, driven by Alan Jones and Clay Regazzoni, who took Williams' first win in that year's British Grand Prix, before Jones stepped up and won 4 of the next 5 races. Although Williams lost out to Ferrari in 1979, Williams had established themselves as the team to beat for 1980.