The recent article in The Register Ten spacecraft – from Venus Express to Voyager 2 – all tracked same solar flare talks about ten spacecraft noticing the same coronal mass ejection (CME) as it expanded through the system.
Other craft reported marked decreases in cosmic rays for a day or more as the CME passed
One of the big problems with manned space flight is the exposure to radiation caused by cosmic rays.
Would it be viable to "ride" a CME to reduce the radiation exposure or would this cause all sorts of other issues?
I guess all the electronics on the craft would need serious protection at the very least, but I have little knowledge of CMEs. Keeping up with it's speed is probably something beyond current technology.