[1] In 1957 he visited the workshops of Chappe et Gessalin to see what was involved in producing automobile bodywork in fibreglass and soon progressed to making a body for a full-sized car of his own design.

[5] Robert Jonet, who worked for Schwab, was transferred to the Atla shop full-time to assist in painting and trimming the cars.

[6] Schwab, who was a part-time racing driver, used his contacts to have the prototype Atla tested by the French automotive press.

Powering the car was Renault's Billancourt engine, mounted behind the rear wheels in a rear-engine, rear-wheel drive layout.

[1] A basic kit included a bare body shell with the doors, hood and rear hatch mounted on hinges and the chassis with all attachment points and cost 250,000 Francs.

A completely assembled Atla Type 750 used the 747 cc (46 cu in) version from the Renault 4CV that produced 16 kW (21 hp), and came with a 3-speed manual transaxle.

The Atla Type 850 used the 845 cc (52 cu in) engine from the Renault Dauphine that developed 22 kW (30 hp), and also had a 3-speed manual transaxle.

[8][1] At least one car was built with Atla bodywork and the air-cooled boxer-twin engine and transaxle from a Panhard Dyna Z in a front-engine, front-wheel-drive configuration.

Some references say that the Panhard drive-train was a factory option, and that six cars were built by them at a second assembly location in Malakoff.

[1] This major price increase caused orders to essentially stop, crippling the finances of the company.