With adequate precautions (to name a few examples - shielding, crew dosimeters, crew rotation if more than one trip needed), I imagine it'd be a pretty safe car

With adequate precautions (to name a few examples - shielding, crew dosimeters, crew rotation if more than one trip needed), I imagine it'd be a pretty safe cargo to take. I wouldn't be surprised if it was actually safer than hauling something like oil.