Photoshop & ZBrush…!! Best combination!
In addition to the rendering software and tweaking its configs, increase your RAM (8GB or more) and get a CPU (speed of at least 3ghz), and also install a good graphic card (nvidia/ATI). Cheers !!
Great idea! A dedicated category for low poly game models is needed
F1 cars have organic forms with dynamic curves and edges. For your first 3D car modeling I would suggest you to refer cars like Audi TT.
HAPPY MODELING !!
Another software is Pixologic ZBrush. Its Retopology tool works great