A driver tried to escape police officers after they tried to break up a 30-person house party.
The North West Motorway Police say eagle-eyed officers spotted the driver as he tried to get on the M6.
They say the motorist was then asked to take a DrugWipe and tested positive for cannabis.
The driver – who has not been identified – was then arrested.
A North West Motorway Police spokesman said: “So you decide to party miles away from your home address with 30 or more of your mates, police turn up and you drive off.
“Observations passed and an eagle-eyed officer spots you joining the M6.
“Driver stopped and arrested for a positive DrugWipe.”
Officers have not revealed where the party was held.