San Francisco's Del Popolo pizza truck is a stunner, with glass doors that showcase an Italian-made wood-fired oven. Keesey tracked the truck to Sydney Walton Square in the Financial District and bought a pizza for the $7 "beta" price (which has increased to $10 now that the truck has officially launched).
"Their mozzarella was exceptional!" Keesey marvels. The pie is loaded with basil and a decent sauce, though Keesey wishes the crust had been left to crisp in the oven for just a minute longer.