It's not possible to both maximize the safety and efficacy of using oil while externalizing the long term economic and environmental impact of using oil. The proposed efficiency and safety are entirety predicated on the externalized impact of pollution, climate change, and oil sand fracking.
What's the problem with keeping the more effective technology (pipelines) and instead using taxes to disincentivize the externalities? Wouldn't that be better for everyone?
I am not saying we should make oil cheaper. That is the point of the taxes. We should be raising the price through taxes, not by blocking the state of the art technologies.