For Scud Race (Sega Super GT in North America, to avoid confusion with the Soviet Scud missile) emulation is indeed your only option; the game was never ported at all to any consoles, and for good reason: the BPR Global GT Series, on which the game was based, was rebranded as the FIA GT Championship mere months after the game was released, and that series, in turn, was the predecessor to the Blancpain GT Series Sprint Cup of today. That said, this game was the first to use Sega’s then-new Model 3 hardware, and compared to the earlier Daytona USA (to which it is effectively a spiritual successor), had even better audio and visuals as a result. That fact alone, however, would have made an arcade-perfect Saturn port (almost) impossible - this was effectively a 64-bit game in a 32-bit world, and it showed.
With that in mind, here’s some footage. This is a quick race on the Expert course (Classic Castle) in the McLaren F1:
And there was also an updated version, Scud Race Plus, which added a Super Beginner course set inside a house, and four utterly bizarre secret vehicles: a tank, a bus, a cat and a rocket car. See the lunacy of it all for yourself:
Sega hasn’t completely forgotten about it, though, despite no longer owning the rights to any of the manufacturers featured in it as of now; the Xbox port of OutRun 2 includes all four of the regular courses from Scud Race (but not the Super Beginner course above) linked together as an unlockable extra not found in the original game (or, indeed, any and all subsequent rereleases of OutRun 2). Here it is:
As for Sega Touring Car Championship, it ran on the older Model 2 hardware and was based on the 1996 International Touring Car Championship. This one can’t be rereleased at all either because the ITC (precursor to today’s DTM) no longer exists. In addition to the AMG C-Class and Opel/Vauxhall Calibra, it also featured an Alfa 155 and a JGTC Toyota Supra, at least a year before the Gran Turismo series made all four of them much more widely known to the general public.
Here’s a playthrough of the arcade version using the C-Class. The interesting thing about it is that if you had the fastest aggregate time after three races (sadly not the case in the video below), you would race on the secret track, called Urban Circuit. It takes place at night and is very narrow, and you have to win on that track to get the best possible ending.
And here’s some footage of the Saturn port. While it has more cars and tracks compared to the arcade version, the graphics are clearly inferior, as they often are with most Saturn ports of Model 2 racers:
In short, this game is just as fun as Sega Rally or Scud Race, but is best experienced on an emulator for the sake of the arcade version’s better visuals. Oh, and the Eurobeat soundtrack - with vocals by Ann Sinclair - is the perfect accompaniment to the game’s fast-paced feel. My favorite is “Don’t Drop Me”:
Just one listen and you’ll wonder why Eurobeat isn’t used as often as it should be in racing games, especially the more recent ones.