Shortdistance Carriers CC owned a Peterbilt truck that was damaged in an accident in December 1995. The owner insured the truck and lodged a claim with its insurer. The truck was taken to a garage operated by McCarthy Retail Ltd, but the owner gave no instruction to repair it. The garage, acting under a bona fide but mistaken belief that the insurer (through its loss adjuster) had authorised repairs, repaired the truck at a cost of R186 000 and returned it to the owner. The insurer later repudiated the insurance claim, although it was common cause on appeal that the repudiation was unfounded. No contract existed between the garage and either the owner or the insurer for the repairs, and the owner did not institute action against the insurer. The garage sued the owner on the basis of unjustified enrichment.