Via James' find in the PDS
http://hirise.lpl.arizona.edu/PSP_010341_1775
And
http://hirise.lpl.arizona.edu/PSP_010486_1775
Looks to me like once thru the current purgatoid/pavement area onto the Fram-crater-adjacent like terrain, it's smooth sailing, and by the time the purgatoids come back, we've got acres and acres of pavement for long drivers as well.
Awesome
(Starting a new thread for discussion of imagery beyond that which we already had)