We should conserve fuel, because it gets depleting nowadays. So, it is our duty to conserve it. If we fails to conserve the fuel, then the next generation will suffer, with lack of fuel. So, we must organize the use of fuel.
How can we conserve the fuel??
We can use public transports more, instead of using personal vehicles like bikes.
We can use cycles, battery vehicles,etc..
Also, the more release of fumes from the vehicles, will spoil and deplete the Ozone layer.