A painting of a city street with neon lights and cars

Create a captivating vintage-inspired poster depicting a sprawling futuristic cyberpunk metropolis. Emulate the iconic design elements of early 20th-century travel advertisements, infusing them with neon-lit skyscrapers, soaring monorails, and bustling hovercrafts. Utilize the distinct color palette reminiscent of art deco aesthetics, with deep blues, electric purples, and vibrant teals. Frame the scene through a wide-angle lens, capturing the city's grandeur from a low angle to emphasize its towering architecture. Employ dynamic composition techniques, such as the rule of thirds, and incorporate a touch of film grain for an authentic retro feel.