- Vehicle: Forster and Weicker gutted the car's interior. Then they reinforced the steel frame to support the added weight from the water and swapped the shock-absorbing springs for airbags to create a custom air suspension.
- Tub: Using plywood and fiberboard, the duo made a mold of the car's interior. To make the pool, they covered the mold with gel coat and then layers of fiberglass. A heat exchanger warms the water with heat from the engine.
- Detailing: Maintaining the Cadillac's look was a high priority, Forster says. They had to totally waterproof the car's interior, sealing the edges of the fiberglass tub and customized dashboard with marine-grade silicone caulk.