Related Clues:
- With 47-Across, car's tank top
- Pit stop supply
- Driver's pedal
- Hydrogen, e.g
- Carbon dioxide, e.g
- Pumped item
- One state of matter
- With 32-Down, pilot's place
- Fuel for American state leader of Senate
- Mower power, perhaps
- Helium, e.g
- Terrific time, informally
- Any of the "noble" elements
- Ford Fiesta fuel
- It's a bit of laugh raising decline