Police recovered approximately £19,000 and arrested two men after a car was stopped on the A19 near Osmotherley, Northallerton.
Road policing officers stopped the car, a Kia Sedona, which was travelling southbound at around 12.30pm on Monday 12 September 2011. Officers carried out a search of the vehicle and found the cash contained in a carrier bag.
The sole occupant of the vehicle, a 62-year-old man from Middlesbrough was arrested at the scene on suspicion of money laundering.
A subsequent search of a property in Middlesbrough resulted in the owner of the vehicle, a 45-year-old Middlesbrough man, also being arrested on suspicion of money laundering this morning (13 September).
Both men have been released on bail while enquiries continue.