NJ5 said:
I think you're wrong in this case. If I understood correctly, in this program the only thing they destroy is the engine of the old car. The other parts can still get resold or recycled. The energy used to make the engine should be more than compensated for with the energy saved by riding a more efficient car. An engine costs a few thousand dollars to make, even if all of that was energy a more efficient car saves more than that over a few years.
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You're both wrong and right, and it really depends on what you're trading in compared to what you're getting new as well as the kinds of environmental damage you're looking at ...
Cars from the early and mid 1990s are (roughly) as fuel efficient as similar cars are today and have very similar emmissions' standards, so the input costs from moving to a new car are probably far greater than the savings that will ever be produced. Essentially, consider how little gain (from an environmental perspecitve) there would be from running a brand new Honda Civic compared to a civic from 1994 assuming similar builds for the car. Where you might seem big improvements would be from older cars and from people using this as an opportunity to switch to driving something much smaller and more fuel efficient. Many people who drive older cars today are driving SUVs primarily because they were very common throughout the past coule of decades; and if someone made the choice to drive a Ford Fusion rather than a Ford Explorer the savings from the new car would more than cover its own production.








