Actually, this is what I experienced too. I did state that the other cars were inaudible, which is true of Toca. I meant to say that they make generic sounds Specifically, my cars always sound like there's a racing muffler installed no matter if it's a VW Beetle or whatever. The other cars are somewhat muffled and generic sounding, except in one-make races when my car is off camera.
I had wondered if T10 might have made an update to use more compressed samples to change this, but from your clip it sounds like they haven't.