A BBC News report which opens with:
The Pakistani cabinet has ordered officials to finalise a deal as quickly as possible to bring an end to a six-month blockade on overland Nato supplies into Afghanistan. But it has stopped short of announcing when the transit lines will reopen.
How about this, sorry it is a scam IMO:
Pakistani MPs also support the idea of Nato paying Islamabad a levy to use the routes, in addition to paying the lorry drivers' salaries....Pakistan's civilian government has to draw up a budget in a couple of weeks' time and desperately needs US cash which is currently being held up because of the tensions
Link:http://www.bbc.co.uk/news/world-asia-18095383

I am sure the US Congress will be grateful to pay more to Pakistan.