From the Soy On Soy department:

Concord, MA's Nutrition Kitchen Inc. has developed the first pasta noodle made entirely from soybeans. So now, when you make a simple stir-fry, you can eat nothing but soy products. The noodles are even vegan safe as they don't use coloring such as squid ink or dyes. Only 100% soybean. If anyone knows of a store in Chicago that has these noodles, please let me know. I'm always looking for new foods to try. (Metro West Daily News)