And it is done!
We're really happy with the finished project. We actually paid $10 for the Roll-Away Lumber Cart plan from the Woodsmith website so we could get the construction instructions and the complimentary Panel Cutting Guide (which we haven't built yet), but for more advanced woodworkers, you can get the Sketchup file for free here.
Now that this project is done, we're thinking about what is next in the garage. I'm considering getting rid of both of the existing workbenches and replacing them with a workbench that provides a better project work area. I'd really like to build this Woodworker's Workbench on Instructables. Making Workbenches book mentioned in the article.
I also built a DIY Cyclone Dust Collector. It worked absolutely fantastic for about the first 20 minutes and then this happened. LOL
Update later: Apparently, I wasn't the only person who had these problems with the dust collector and the guy who designed it updated the design so this wouldn't happen. All better.