From a well-known source:
Year and place: 1958-59, Örebro + Göteborg
In 1957 the swedish sports car Ockelbo was presented, and was well received. (See 'Ockelbo'.)
Beginning with a cast of an 'Ockelbo', Thure Örnryd made some minor changes to the plastic body. Among others it got small fins.
Carina Type I was designed for chassis with a wheel base between 220 and 250 cm. The fully 4 metre long body could also be ordered as a 2+2 seater, and it could be delivered with a hardtop.
Type II
The Type II body was made for the same chassis as Type I, but made as a 4-seater. It was delivered only as a convertible.
Some 20 bodies were produced, and 6 complete cars on Saab, Volvo, DKW and Volkswagen chassis. Then, in 1959, Örnryd sold the moulds and continued producing plastic boats.
Another Carina
"Svenska Plastbilar AB" ('Swedish Plastic Cars') in Göteborg was the company that bought the moulds. They presented Carina Type III, a lengthened body for up to 280cm wheelbase chassis.
They also sold the elder Carina models, and a slightly modified Type I. The reason was some critic about the fins disturbing the flowing design of the body - so a model was sold without fins. Initially the fins on bodies simply were cut off, but later the moulds were modified.
Around 10 Carinas were produced in Göteborg, then this swedish sports car dream was over.