toured North, South, and Central America in their 1995 B190. 44,000 miles in over 500 days. It's a really interesting site... be sure to read the part about traversing the Darien Gap if nothing else!
Being owners of B190s, we of course were very interested in their trip, so we did an interview
with them that tends toward the mechanical end of it - how did they prep the van, how did they handle oil changes, etc.
Both of these are really interesting reads (however, I actually run B190.com where the interview is, so I'm biased there
). I hope you enjoy them as much as I have.