My 2 cents.
The Rolls Royce was bought in UK (they drive right hand over there like in Pakistan)
The driver drove it a few kilometers to classify it as second hand
UK being an exporter, customs must have cleared without any hassle
Import to Pakistan, would have involved kickbacks at massive level. Instead of a 200-300% tax, would have got away with 20% and that too into custom officials pocket.
Registration, well another commission to get the car registered and issued a license plate.
Remitting money from Pakistan to UK would involve remitting at full amount, probably to launder money and whiten as much as possible.
The rest would have been transferred through hawala.
The news probably leaked due to a custom official who didn’t get as per the deal.