The argument that locally sourced is better for the environment is a generally spurious claim based on incomplete understanding of modern logistics. For one, food production efficiency is extremely dependent on climate suitability for the crop. Two, transportation only accounts for 11% of food energy use...production (which again is highly dependent on climate) takes far more. Three, transportation energy usage is highly dependent on utilization and relatively independent of distance...A Californian eating a kiwifruit shipped in a packed container from New Zealand might very well produce less CO2 than a similarly sized Tomato grown 30 miles away and driven via pickup truck to a farmers market.