Only real problem being that there must be a bit of an issue with the near side front caliper as it chewed through a brake pad on day two. Pretty annoying, but could have been worse certainly.
I spotted at least 30 BXs, mainly in Spain, 40000000 Xantias, 1 DS, 1 CX, hundreds of 2CVs and several AX GTs.
A few photographs:

IMG_0872 by Wooscary, on Flickr
Towel rack/BX

IMG_0875 by Wooscary, on Flickr
Looking small and dejected while I have a piss and figure out where to buy brake pads from.

IMG_0888 by Wooscary, on Flickr
This place did the trick for a price. I picked up a trolley jack while I was at it too, couldn't be arsed pissing about.

IMG_0934 by Wooscary, on Flickr
Pulled up behind this just as the guy was getting out, just over the Spanish border. He grinned and said "nice car".

IMG_0936 by Wooscary, on Flickr
This one was a few feet away from the previous one, not sure what model etc as I was too busy trying to decide whether I wanted any illicit substances from a nice man.

IMG_1169 by Wooscary, on Flickr

IMG_1170 by Wooscary, on Flickr

IMG_1205 by Wooscary, on Flickr
A yellow bridge.

IMG_1242 by Wooscary, on Flickr
Hanging out in Logrono

IMG_1256 by Wooscary, on Flickr

IMG_1257 by Wooscary, on Flickr
A bit sorry looking, in the giant FREE carpark in Logrono, wow!

IMG_1314 by Wooscary, on Flickr
These were everywhere and looking very shiny.

IMG_1390 by Wooscary, on Flickr

IMG_1392 by Wooscary, on Flickr
Odd one in Arnedillo, which is down the road from Enciso where there are some excelled dinosaur footprints.

IMG_1506 by Wooscary, on Flickr
This guy was quite the poser.

IMG_1534 by Wooscary, on Flickr
And a bit of foggy France for good measure.
Anyway, had an amazing time, totaled approx 3500 miles and bought a little bit of cheap beer also.