Good thing the people designing the transport casks never thought of that.. you should join their team.. Oh wait.. they did in 1972, and tested the designs?

How much energy was delivered to the cask when a rocket powered train hit it at 84 mph? https://www.youtube.com/watch?v=Bu1YFshFuI4

How much radioactive material was released?

What sort of accident do you propose would deliver more energy vs a train strike at 84mph?