What future benefit is gained by having people driving around 5,441+ lb electric vehicles given that we will likely (given the current political climate) still

What future benefit is gained by having people driving around 5,441+ lb electric vehicles given that we will likely (given the current political climate) still be getting more than 50% of our electric (maybe more) from carbon emitting sources in 20 years? No, you want to start solving this problem by attacking it directly. The problem is too much CO2 emissions, so start taxing CO2 emissions from _ALL_ sources, don't try to pick winners (electric cars) and subsidize them, when the next big breakthrough might be a petrol engine that can catalyze out the carbon, or hydrogen fuel cells. Neither of those choices seems likely, but hey... Much like I think the "environmentalists" are as much at fault for climate change by fear mongering nukes in order to wish for renewable sources for the past 40 years as the deniers, I think the electric car people with their "zero emissions" bumper stickers are preaching a lie.