This is not realistic nor scalable. The reality is that the US and Canada were built around cars, and even if we had huge transit projects there would still be a need for roads and vehicles due to the size and rural/industrial areas.
Lithium batteries can be recycled. All the studies have shown that electric cars are a huge net win for the environment, and the cries about the environmental cost of building the cars in the first place don't actually match the reality. Especially when you consider that future ev ecosystems should and hopefully will have a strong battery recycling operation.
This need not be permanent, there is a Pareto improvement to be made and it has nothing to do with Rural/industrial areas.