Where are the Google Street View cars driving ?

Recognise this - have you ever seen one ?

I've seen them twice - once near Sutton Bridge in Lincolnshire, and once in Lowestoft.... I checked the area, but I don't appear in the images...
I'm also waiting for my street to be done again as my house, which is about 5 years old, was in the process of being constructed when the car came down the road...
This website provides some interesting detail on the way that Streetview images are created, the different vehicles that are used, and then a map showing the global coverage.
Click your country to see where the cars are currently driving...

Would be good to spend a day with one of the cars....