[video=youtube;TREExFMlaB8]https://www.youtube.com/watch?v=TREExFMlaB8[/video]
From early '98 iirc.
Shame we never got a port of Scud Race / Sega Super GT on Dreamcast, but that demo on very early hardware was pretty cool.
That dev-kit only had maybe 40% the performance of the final Dreamcast hardware.
Edit: The demo ran on the
Katana Set 2 SDK which was basically a Pentium II PC with early prototype PowerVR2 ARC prototype graphics card. Did not have the SH-4 CPU.
The later
Katana Set 4 dev-kits (spring/summer '98?) had about 40% the performance of the final Dreamcast hardware.