I travel to Pittsburg as well every other week, the issue with that stretch is getting stuck behind mining dump trucks and other semis avoiding 70. You can actually run from Cadiz all the way to 161 on the same Rd... don't recall the changes but it's 16 and I believe 250. I try and take different routes depending on my departure times for a change of scenery, I've always wanted to take one of the cars out there.