Prompt: Generate a captivating image that encapsulates the essence of automotive dreams, featuring a singular, futuristic supercar. Picture this sleek machine against a backdrop of a cosmic nebula, its streamlined silhouette reflecting otherworldly hues. The car hovers above a luminescent road that twists and turns like a rollercoaster through the celestial expanse. Illuminate the scene with vibrant streaks of light as the car accelerates into the unknown, leaving behind a trail of stardust. This singular automotive marvel symbolizes the fusion of cutting-edge design, space-age technology, and a journey into the limitless possibilities of the future.