I would definitely count pipelines as vehicles, for a few reasons: 1. it removes some need to use other vehicles, the same as any of the other transportation m

I would definitely count pipelines as vehicles, for a few reasons: 1. it removes some need to use other vehicles, the same as any of the other transportation modes, and at quite high volume 2. it may be stationary, but still has “engines” in the form of pumping stations 3. it actually requires auxiliary vehicles for continued operation, in the form of employees traveling up and down the pipeline access roads in trucks or even with helicopters; this would be an interesting part of the calculation 4. there actually are movable parts of pipelines, called “pigs” in the transalaska pipeline: scrubbers that move up and down inside the pipeline, removing the solid material that accumulates on the interior walls They aren’t just a long piece of cylindrical metal sitting there passively.