They are able to travel up and down the country on a regular basis but again they have no guarantee of a having return loads . There are too many vehicles on the road which are being run inefficiently and without back loads . For the first Christmas ever internet shopping has overtaken the high street .
According to the above context, choose the best option to answer the following question.
Question: Why is it inefficient to run vehicles without back loads ?
Options:
- The loads you carry   on your back are not good .
 - Carrying something back to someone is unstable
 - None of the above choices .
 - There is no return load on the semi truck .


There is no return load on the semi truck .