Related Clues:
- Tire out completely
- "E" on a gas gauge
- Like the null set
- Like some promises, alas
- Overhead cover protecting us behind old drain
- Running on fumes, say
- Drained glass
- Bleak gas gauge level
- Loneliness parents feel when their children leave home
- Knockout type in mini might take your breath away?
- Carrying no passengers regularly seems petty
- Word that can precede the last parts of 20- and 57-Across and 11- and 35-Down
- Take energy from vote in the USA somehow
- Like bottles for recycling
- Insincere, as a promise