As the convoy growled down Highway One, the national ring road that encircles the whole country, the turret machine-gunner rotated left and right, scanning the roadside.
While the Manta knifes pleasingly through the air, the Walrus accelerates and steers with the left stick, while aiming its front-mounted turret with the right.
The turret clock at Felbrigg Hall, near Cromer, has been refurbished using money left in a will by Gillian Hart, who lived on the National Trust estate.