Does keeping an old car running "benefit" the environment ?

[mrbigstuff]

Black Landlord wrote:
Bringing it back to my question above- does not buying a new car result in one less car on the road?

ah, that is essentially my question. if I sell my car, it will end up in the hands of someone likely to drive it into the ground (it's not far away from the dirt now...) and that would be pretty undesirable. however, if i sink some cash into it i will prolong its life, perhaps to my bank account's detriment (and some mechanic's profit), but ultimately it will avoid a new car coming into the world.