Vehicle-Mounted Bike Rack Design -- 2

I need a design for a vehicle-mounted bike rack. The rack should be capable of holding 5 or more bikes and be constructed from steel.

Key Requirements:
- Design a vehicle-mounted vertical bike rack.
- Adaptable design to hold 2, 4 or 6 bikes
- Anti rattle system integrated in design
- Use steel as the primary material.

Ideal Skills and Experience:
- Experience in designing vehicle-mounted accessories.
- Proficiency in working with steel materials.
- Ability to create designs that accommodate multiple bikes securely.
- Knowledge of different bike rack types, including wall-mounted and floor-standing, for future adaptability.