Really, at this point just go the extra inch and add the 's.
"Really bored while driving from S. Carolina to CT in the rain."
How offensive. Everyone knows the possessive 's' requires an apostrophe!
The most ironic spider bite ever.
You'd think they'd stop making such BS mistakes. In this case, it's S, not B.
Just add an apostrophe s after everything. Why? Because the lord himself told me to!