While many people focus on the progress made for smaller vehicles , such as 'green' cars , it's easy to overlook the fact that larger vehicles can also be adapted to become more environmentally friendly, and that delivery drivers are just as … While electricity is a good source of power for short-range local work such as garbage collection , it may not prove such a viable alternative yet for long range delivery work; though it's definitely one of the 'greener' trucks out there.