Yeah even today after several more decades of battery science we can just barely make an electric car economical. We still can't get one down to Camry prices.
Because they measure CO2 emission at the electrical generation point.
Not Tesla's fault Singapore plants are almost 100% natural gas.
https://www.straitstimes.com/singapore/transport/electric-ca...
https://en.m.wikipedia.org/wiki/Electricity_sector_in_Singap...