Yes, it was available.
An automatic transmission to bolt up to the original 1959 6 banger would have to come from a 1962 or older chevy/GMC 6 pickup or passenger car. 1963 and newer is completely different.
The standard features of a 1959 Chevrolet Impala are a new X-frame Chassis. The standard model was a 2door but 4door models were available. Also it was available in 3speed manual and 2speed automatic transmission.
20,760 two door station wagons were made by Chevy in 1959
The 1959 Chevrolet - (Bel Air/Impala/Caprice).
The Chevy Show - 1959 Mexican Fiesta was released on: USA: 27 March 1960
The Chevy Show - 1959 Happiest Day was released on: USA: 23 April 1961
The Chevy Show - 1959 Hello World was released on: USA: 4 May 1961
The Chevy Show - 1959 Kids Are Funny was released on: USA: 19 March 1961
The Chevy Show - 1959 Autumn Crocus was released on: USA: 12 February 1961
The first El Camino was seen in 1959
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Vacuum hose diagram for 1959 chevy truck, wiper motor?