Design a simplified subway car interior featuring: 1. **Seating**: Replace the brown benches with light blue upholstered seats. 2. **Walls**: Change the wall color from beige to a soft mint green, with subtle texture for added depth. 3. **Windows**: Modify the windows to be larger and rounded at the edges, with a frosted glass effect. 4. **Handles**: Use sleek, curved hanging handles instead of straight poles for a modern look. 5. **Flooring**: Introduction of a wood-like floor pattern for a warm feel instead of the current flat surface. 6. **Lighting**: Add LED strip lighting along the ceiling for a contemporary vibe. 7. **No signage**: Remove any branding or signage on the walls, ensuring a clean finish. 8. **Accessories**: Include a small interactive digital display panel instead of paper notices. This new design maintains the essence of a subway car while refreshing several key features.