Around the world in a fortnight.
With Phil running a business and Will in fulltime education, their challenge will fit into the holidays, leaving the car somewhere safe (hopefully), flying home after each leg, and then returning back to the car when the next holiday allows.
Travelling west, the total journey will be more than 40,000 miles, with at least 24,901 miles of this by road, equalling the length of Earth’s equator.
Travelling through New Zealand on the far side of the world, the route back to London will include its antipodal point in Spain.