Almost as soon as the Industrial Revolution had produced an engine, in the form of a steam engine, it was applied to use in agricultural, firstly as a stationery engine that pulled implements across the land, and later as a self-powered vehicle which could travel from farm to farm, and could even be used for other purposes such as a steam roller. The internal combustion engine had clear advantages over the steam engine in that it was lighter, simpler and didn't need to be brought up to steam before it could be used. Some car and vehicle manufacturers adapted their products to become tractors, whilst a few compabies such as David Brown and Lamborghini went into car production having made money with tractors.