In his application Selden described a machine with a gasoline-driven, combustion-type engine that sat in front of the driver; a clutch; a foot brake; a drive shaft; and front-wheel drive.
申请中，赛尔登描述了一项机器是石油驱动、在驾驶座前有燃烧式发动机；离合器、脚刹车、前轮驱动。
2
Profiled steel plates, forming the foundation shaft, were driven 15 metres into the ground and a further 3 metres into the limestone bedrock by an enormous vibrating sheeting machine.