Supermodel requires a pretty highly specced Desktop for acceptable performance as when released in 1996 the Model 3 Board was 'Bleeding Edge' real time 3D Hardware* (with a price to match which led to its relative failure in the Arcades). The Pi3 really isn't going to cut it! As suggested previously by Trixster with regards to cl-mame2010, Reicast is the way to go as some of the Titles were converted to the Dreamcast.
However, I will try it out of interest if time allows.
* 32Bit RISC PowerPC 603 66Mhz (CPU) & 2 x Lockheed Martin Real3D/PRO-1000 (GPU)
Update: SuperModel - Sega Model 3
As suspected, static Bitmapped screens run at 6-9 FPS but as soon as a significant amount of Polys need to be displayed its down to 0.5 FPS!!! Interesting/amazing that it actually works though!
Titles Tested: Virtua Fighter 3, Daytona USA 2 and Scud Race.