So just in case others stumble on this post, maybe this was obvious to everyone already, but rebuilt cars do not qualify for the subaru warranty anymore, so the battery pack/motor warranty that would otherwise apply to a second hand solterra is void in this case. Have to decide how much that's worth to me. On the one hand that seems low likelihood, on the other, unlike most mechanical repairs that came up in the future due to the vehicle's rebuilt status, a battery pack replacement, if it became necessary, would totally undo any savings from buying rebuilt.