John Heussi finds himself in need of a new riot van, and stress testing the old one helps him design a new one. It’s just as well because just minutes into its first shift the van is attacked by firework wielding teenagers.

Dave has to contend with an armed response vehicle build, the repair of the dive team's truck, and an MP's visit.

John Heussi sets to work redesigning a new vehicle to transport Cheshire Police's dogs; the force's motorcycle fleet is escorting a painfully slow abnormal load across the county.

John Heussi works his magic on a crushed police boat, while the team mend a beat car that has had its tires slashed.

John Heussi redesigns the force's beat car and an old beat car turns up in the Czech Republic.

Dave has to find replacements for nine of the fleet's unmarked BMW 330 crime cars; John takes to the track.