The "new roadways" of the title refer to various projects, carried out in the USA's research laboratories, that benefit mankind. These include solar energy projects, making glass that can be rolled up like a carpet, and diet experiments with mice that might lead to a cure for color blindness.
| Actor | Role |
|---|---|
| JJohn NesbittNarrator | Narrator |
 Howard M. MitchellPrison Warden (uncredited) | Prison Warden (uncredited) |
 Phillip TerryMan in Photo (uncredited) | Man in Photo (uncredited) |
 Richard CramerNot listed | Not listed |
| TTom QuinnNot listed | Not listed |