Sincerely speaking, adopting biodiesel is not something that should be hard to get but it depends on the government. If they are passionate about renewable energy and greener environment (which i doubt) there can be a scheme set up to collect waste oil or set up agricultural scheme to grow the plants for the feed stock, set up a processing plant and start distribution with awareness of the benefits to the environment.
The only issue is, it is only when you have enough to eat that you would be thinking of planting for vehicles (you know what i mean).

By adaptation in every sector, do you mean use in other machinery apart from automobiles? If yes, i stated that it can be used in trains, aircraft, generators and the likes. Basically; if you have a diesel engine it should be fit for biodiesel (you should check manufaturer specifications tho)