Both the corn and tomatoes were commercially grown nearby, practically in my backyard. These delicacies probably have the smallest carbon footprint of anything I will eat all year.
Because I live in an area that serves urban and suburban transit needs more effectively than most other U.S. communities, when I don't telework from home, I commute to the Loop by train. In the better part of a decade, I have not driven to work one time. My 2007 Prius barely has 42,000 miles on it. So, I don't feel like my other life choices are squandering the small carbon victory represented by food like this.
If your community has farmer's markets, support them. If you have local growers, support them. If you have transit that will satisfy your basic commuting needs, ride it. You will be doing favors for yourself and everyone else.
Think globally. Eat locally. Ride transit.