Alfa Romeo Monospider (Centro Stile/Zagato Concept Car) shares looks with the current GTV and Spider series. It's a one-seater concept with a second seat covered by an aerodynamic fairing, a roll bar, and no windshield. Many of the design solutions were taken up again on the GTVs used in the GTV Cup mono-make race and on the Cup versions of the coupé.
Source & Image Source: Alfa Romeo; https://www.museoalfaromeo.com/en-us/news/Pages/EventArchive2020/Spider-monoposto-concept.aspx