Rishavy, E., Bond, W., and Zechin, T., "Electrovair-A Battery Electric Car," SAE Technical Paper 670175, 1967, doi:10.4271/670175.
This paper describes the General Motors electric car program which resulted in two battery powered passenger cars, Electrovair I and II. These cars were built to evaluate new motor and control concepts. The program proved that modern high performance electric cars are technically feasible. However, a better electric power source is needed and present costs are too high to make electric cars economically practical.