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 .

Question: Why is shipping being disrupted at the moment ?
Answer: The volume is high due to people 's birthdays .The volume is high due to Christmas .None of the above choices .The volume is high due to an economic boom .