Errands - Traveling Salesman

[seandenigris]

• Geolocation-based errands list e.g. I'm going to A - B and C are on the way, but not D
• At least be able to map the errands to manually choose which are "on the way" enough
• A more interesting example - hardware sub-list; hardware is a virtual location, which has my local hardware stores under it, so any of those locations could match

I just noticed that GTD actually talks about this. David's take: it's a nice add-on to a "rigorously managed list", but shouldn't be relied upon.