EoD:
The Fiesta, those textures were some really nice photos I found on a website somewhere a long time ago. It's a really simple car to make, a few box shapes and then just a couple of circles cut in for wheel arches and a couple of rows of faces cut into the sides to give some curve to reflect light nicer and make it appear less boxy. Then just squeeze the photos onto a single texture and duplicate a layer with just the details so that the body colour can be changed with a separate multiply colour layer. The Capri was harder to do, that was just the lowest LOD model from the Capri I made with some bits copied from the Fiesta, the body texture is straight from the baked one I did for the Capri in Blender.
I made loads of stuff a while back, objects for tracks like buildings, cars, fences, small things like lampposts etc. Was going to release them in one big Blender file so people could make a track in Blender and just drag and drop loads of ready made objects over into it like a proper game editor, before I deleted everything without checking whether the backups were good or not..
About the track, it was originally meant to be in the UK, a track with mainly high speed sections and slightly larger than Carlswood, in a large park type terrain - a bit like Four Oaks or Forest Park I guess. Problem is, the sky lighting in Racer ATM looks more like southern America, nice in the shots but you'd never see a sky like that in the UK :-/