Joe West and Kristen Kramer drive by a sign saying Interstate 119 North, implying that Midway City is located somewhere inland on the U.S. West Coast. However, in the real world, no such Interstate 119 exists and the main Interstate 19 is located entirely within the state of Arizona, which is mostly desert. Additionally, Midway City was shown to be surrounded by forestry.
Chester P. Runk uses nanometers as a unit of energy when discussing how the S.E.E. was charged.