> Obviously, you're right long-term but it's a slow transition not a switch we can flip. And trains lend themselves much better to slow declining transition th

> Obviously, you're right long-term but it's a slow transition not a switch we can flip. And trains lend themselves much better to slow declining transition than a new pipeline. Can be used for other cargo; are a bit more expensive so they are a mild financial disincentive; the contaminated material (tanker cars) are by definition mobile and therefore easier to deal with at EOL.