A principal cause of the breach had involved the determination of Deutsch to stay loyal to Panhard engines while Bonnet was keen to switch to Renault power plants.
[1] Renault's 1,108 cc inline-four engine was also used for the Missile, a strict two-seater convertible based on the Le Mans but with a re-worked front end, and for the mid-engined Djet.
The company produced light front-wheel drive and mid-engined sports cars with very aerodynamic fiberglass bodies mainly powered by enhanced Renault engines.
Management concentration on racing activity may nevertheless have come at the expense of commercial focus, and relatively few cars were sold during this period: by 1964 the cash was running out.
[3] Matra was at the time an armaments manufacturer concentrating on missiles, but they were also enthusiastic about the future of the fibreglass technology in which Bonnet was a pioneer.