Elon is smart and employs many smart people. If the thermodynamics didn't work, they would know.

I do wonder if shielding the multi-billion transistor GPUs will be a difficult.

Like the hyperloop?...

Just shield them under the tons of heat radiators they’ll be deploying. One ton of compute will > 1 ton of hardware to radiate the waste heat. Does anyone know the multiplier?

Radiators need to be flat and thin - not really good for radiation shielding.

But guess if you use some sort of fluid in them, you could use a reservoir of it for shielding something.

Like point to point rocket travel?