564 Flavours of Donut

One of the Vodafone advertisements claims there are 564 different flavours of donut. Now I know the last thing I need to add to my diet, however temporarily, is donuts but hey! a challenge is a challenge. Jenny and I reckon that if you can get all 564 flavours of donut anywhere, you can get them in North America and we figure that we'll need to eat, on average, 11.28 donuts per day of our trip if we are to sample them all. What we haven't figured out is how many hours at the gym we'll need to spend to work off each donut nor how much our new bike gear will be able to expand before the seams split, nor how much extra cash we'll need to pay for the extra fuel we'll burn carting around our donut bloated bodies.