Late 99 now and the original head coder has left Bizarre Creations at this point. The game begins to resemble the final version, although the "gang mode" car colours are still present.
This is from the same timeframe as the previous video. A spot on a Spanish show called DOF6. A bit more footage from within Bizarre Creation's studios.
A little later into 1999 now with an interview spot on French TV. The show was called Game Play.
The earliest one. From the old Game Fan website back in early '99