[culi]

I think you're missing the point.

The 2,500 miles figure is just:

  the amount of CO2 emitted in the production of a battery represented as how many miles driving an ICE to produce a similar amount of emissions

A purely arbitrary and somewhat useless comparison. That's all I was trying to point out. If you read into the source of that article it has some actually relevant figures :)

EDIT: also, you misread that bit. 2,500m is for one metric ton. The article states that a battery's manufacturing will take between 2.5 and 16 metric tons of CO2

So the actual figure is: 6.25k-40k miles