Although the 2-door pillared coupe was introduced a few months after the initial 4-door Corvair in 1960, the more sporty Monza version came out in 1961. It quickly became the biggest seller and, within a few years, many of the other, less popular Corvair variants (like the Lakewood station wagon, Greenbrier van, and Loadside pickup) were discontinued. The Corvair Monza is the car that inspired Iacocca to create the Mustang from the lowly Falcon compact.
The turbocharged Spyder model arrived for 1962, with the new Corsa (turbo engine optional) arriving in 1965 with the restyled hardtop body. At that time, the Monza name became the standard Corvair, with the Corsa becoming the new, sporty Corvair, replacing both the Monza and Spyder. From 1960-64, lower trim Corvairs just had numerical designations.
The connection with EVs is that, up until the 2011 Chevy Volt, the Corvair was the most revolutionary new car that GM had ever produced for general sale. The Corvair was a completely new car from the ground up that shared almost nothing with any other GM vehicle until the 1961 Pontiac Tempest which used the Corvair's rear transaxle and suspension. Interestingly, because the Tempest didn't have the engine in the rear, it didn't suffer any of the same kind of driving characteristics that gave the Corvair its quirky handling.
Similarly, the Volt shared its steering rack with the new Chevy Cruze which, unfortunately, had a construction flaw that resulted in a 'silent' recall and replacement. Don't ask me how I know.