Police in Wigan have been using new technology to catch car tax dodgers and those driving without insurance.
In five weeks they have succeeded in impounding more than 800 cars and collected more than £65,000 in fines.
Officers used the Automated Number Plate Recognition System (ANPR) to detect motorists driving illegally.
Vehicles not registered with valid tax or insurance certificates trigger an alert which allows officers to identify them and pull them over.
If drivers are then unable to provide proof of insurance, a valid licence or are not displaying a valid tax disc, their vehicle is seized and impounded.
To reclaim vehicles, owners have to provide the relevant documents plus a fee of £105 and a £12 storage charge per day, in addition to the £200 fixed penalty notice or court fine.
If an owner then fails to reclaim the vehicle within 14 days, it is likely to be scrapped or sold.
Britain has one of the highest levels of uninsured driving in Europe, with more than a million uninsured vehicles on the roads.
Last year the Motor Insurers' Bureau (MIB) handled more than 41,000 claims from victims of road accidents caused by untraced and uninsured drivers.