Efficient.
There are a step in the right direction to being energy efficient. Although some adjustments are still being made.
Efficient: being effective without wasting time or effort or expense; "an efficient production manager"; "efficient engines save gas" Sufficient:of a quantity that can fulfill a need or requirement but without being abundant; "sufficient food"
The "w" prefix can stand for "with," in the context of being efficient when working with or using something.
Being extremely efficient and careful.
Yes and No. It is more efficient then a conventional gas powered system, but still has a long way to go in terms of being real efficient.
By being better and more efficient that your colleagues.
ddd
Not all cars are in need of being more efficient depending on what standpoint this is considered. Hybrids, relatively speaking are very efficient cars.
you are stupied
Efficient (Adj) It means able to produce effect wanted without wasting time or energy.
efficient