Complex sentence: The Ferrari 575M Superamerica was an innovative convertible version of the 575M Maranello; it featured an electrochromic glass panel roof which rotated 180 ° (both are production car firsts) at the rear to lay flat over the boot.
Split into simpler sentences: The Ferrari 575M Superamerica was an innovative convertible version of the 575M Maranello with a rectractable glass hardtop. It featured an electrochromic glass panel roof which rotated 180 ° (both are production car firsts) at the rear to lay flat over the boot.