I think the goal is to continue moving in a direction of least environmental impact, especially considering the geometric growth of the planet population.
Hence, we get changes like recycling, improved fuel economy, reduced pollution output, reduced toxins in manufacturing, etc.
If we can replace fossil fuels with something that is better overall, that should be a goal, no?
Would you consider a 2.6 million square foot plant producing 25,000 cars a year to be a full-scale production?
How about 4 million sq ft with annual production of 2 million vehicles?
Or a 10 million sq ft just being built for two specific models?
Are those full-scale?