| Co-creator of the Reitwagen, the first internal-combustion motorcycle |
| Airport necessity |
| Firing range necessity |
| Can't sell anymore, by necessity |
| Barbershop necessity? |
| Pre-cable necessity |
| Nutritional necessity |
| Automotive necessity |
| Masquerade necessity |
| A necessity for life |
| Split necessity |
| Amtrak necessity |
| Absolute necessity, perhaps |
| BLT necessity |
| Alternators in some internal-combustion engines |
| Acupuncture necessity |
| FaceTime necessity |
| Office worker's necessity |
| Boring necessity? |
| Pressing necessity |
| Oxford necessity. |
| Delivery necessity |
| Necessity |
| Nativity scene necessity |
| Invention necessity |
| Car necessity |
| Diner's necessity |
| Suburban necessity |
| Internal-combustion engine, for short |
| Skype necessity, for short |