The average life span of a car in the U.S. is 12 years, so even if 8-9 years isn't 'great', it would come out better. Batteries have a higher ceiling when it comes to becoming 'more and more efficient' than hybrid/ICE. ICE is at the stage where a 1% increase in efficiency is a huge step, batteries have really just begun such intensive development. I'm a bit miffed why increasing capacity would trend dirtier when such a thing requires better efficiencies to accomplish.
I tell ya where the big enviro gain is to be had and that is street level where millions of people have to directly breath in the **** coming out of the tailpipes. At least with batteries, the crap emitted into the air has a chance to spread out and dissipate. A bulk of the hazardous processing takes place in the boonies. It's certainly not going to 'smog' up the streets of London, Paris, Rome etc. as happens now during the rush hours.
I don't think it's quite that simple when a great many people tend to trade in their cars for new ones every 3 or 4 years, esp people who drive more expensive cars like the big, fast Teslas. They're driving the demand for more of these cars to be built, and these are the cars whose manufacture creates the largest carbon footprint, by far. Add to that the fact that the big, fast Teslas aren't really very green at all, and it's hard to see how they're helping the environment. And I was being generous when I used the 8 or 9 year figure. There are so many EVs out there that are Teslas that the average time to 'break even' is likely much longer.
Batteries might have a higher efficiency ceiling, but we've been hearing this forever. The progress in increasing their efficiency/range has been staggeringly slow for as long as their have been electric cars - which is as long as there have been cars.
Increasing capacity quickly and inexpensively, which would be most likely to happen, is what would make it dirtier. You can't significantly increase capacity quickly by building nuclear power plants, etc. You do it by building more fossil fuel plants.
Edited by AustinF1, 06 March 2019 - 18:41.