Police said a search of the vehicle revealed several boxes which contained zombie style knives, knuckledusters and other bladed weapons.
In total, more than 40 dangerous blades were found in the vehicle, they said.
Ch Insp Joe McNally described it as an “alarming discovery” and said the officers who pulled over the vehicle had acted on instinct.
“The constabulary has recently just completed Operation Sceptre, a week-long national campaign that tackles knife crime in our areas through proactive policing operations and deployments and community engagement – during this week, our officers recovered over 250 weapons from across Cheshire,” he said.
“As a result of this stop, a further 40 blades, a combination of zombie knives, machetes and a knuckleduster, are now safely in our possession.
“These blades will soon be destroyed, permanently preventing possibility of them being used on our streets and falling into the wrong hands.”