This really doesn't change anything.
Rail is more expensive than pipeline to ship bitumen and rail capacity is limited. Yes it may make rail a lower spill option than pipeline (currently like 10 times the spill risk) but the economics don't change.
Also we shouldn't be using rail capacity to ship a liquid. That should be kept for shipping goods and grains that can't be piped. It makes no sense from a cost/energy use standpoint to ship by rail. Twinning rail lines to add capacity would be even more environmentally distructive than pipelines
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