Route Planner: how did Google camera car plan their driving route?

I was wondering if anyone knows how Google camera car (for the street view scanning) did their route planning? Below are my conditions:

Let's suppose I have a couple of cameras mounted on my van
Mounted cameras will take a sequence of images as I drive around
I want to get an efficient route planner to cover the entire area of the town road
Every single part of the town should be covered (by driving) but maximize efficiency by minimizing the driving time
I tried some available route planners but all of them require physical address of start and stop points, which I don't have

P.S. I mean, I guess I could just use one of those running apps to keep track of GPS while driving, but I am trying to do get a more sophisticated plan before starting the scan.

Solution

I'm sure they used a multi stop route planner for this. How about splitting the area into 4 parts (for example) and then inserting a number of house numbers in each street? This is how our customers do this. It forces the route to visit all the streets in your area.