Custom Vintage Espresso Cart

I'm looking for a mobile, foldable espresso coffee cart tailored for catering events. The cart should embody a vintage and classic aesthetic.

Key requirements:
- Storage compartments
- Foldable design
- Designated spots for a knockbox and pitcher rinser (plumbing needed)

Ideal skills and experience:
- Experience in designing and building custom catering equipment
- Strong background in vintage-style craftsmanship
- Plumbing knowledge for integrated components