Only the French would put cars like these into production. The Dyna Z1's bodywork was all aluminium, whereas, the later PL17 was built of steel. All three cars were powered by a horizontally opposed 2 cylinder engine of 845cc. Must have been a shock to see one in the USA!
Panhard (& Levassor) were founded in 1889 and were one of the pioneers of the motor industry. Citroen took control in 1965 and the last Panhard car, the 24CT, ceased production in 1967. I think, Panhard are still going, but, as manufacturers of military vehicles.
Steve