I think what jedberg meant was that if you are producing the electricity at a centralized place (like even a coal-fired power plant) you could theoretically capture carbon using massive scrubbers on the exhaust towers. Developing similar technology and installing it in all of the individual gas-burning cars would be near impossible.

My 2c: The real "secret plan" here is that converting us to electric vehicles paves the way to develop (and creates structural demand for) 0-emission ways to recharge them, like:

- resurgence of large nuclear plants

- self-contained micro-nuclear reactors that you could bury in your yard

- solar on your garage (paired with a Tesla Powerwall to recharge your car at night)