But today is bring technology used to achieve greater comfort. So remove the tractor he used instead of labor from people in order to save the expense and time to prepare the process of farming, and comfortable.
It currently has the technology to be used to achieve greater comfort. Thus bringing the tractor replacing the labor of people in order to save costs and reduce the time to prepare the process and made it more comfortable.
But at present there are using technology to use to create more convenience. Therefore the he car tractor instead of workers from the people to save cost and reduce time to prepare the farming and more comfortable.