I usually do it like that most of the times, but it doesn't really matter if you have adapted a workflow using passes (I prefer to completely replace the BG in photoshop/compositing app, to get as much as possible back from the original BG picture, whereas in 3D, there are chances for increased or decreased RGB values - it's not difficult to make it match the original image though, but biggest issue is that most apps kinda change the image (interpolates the pixels even @ 1:1 render size, and you'll lose sharpness).
Yah, and thats normal - you shouldn't bother too much about making a seamless transition, although it can be done. But it's a waste of time IMO. Just do the job in Photoshop.
And while you are in Photoshop, you can (should) also use the opportunity to tweak the colors and/or contrast. In the latest render, the car is too red. Do a quick and dirty feathered selection around the red parts (theres a gazillion of ways to do this), and desaturate it maybe 20-40% (sounds like a lot, but try it), while darkening it too - but don't darken too much - actually, you may want to darken most of the car, except highlights.
I'm not defending the method - just expressing my opinion that if LFS allowed it, then fine by me. But if you could only do this by using other software, then it's not.
If Scawen doesn't want the script system to be used like this, then it shouldn't be possible to do - but other than that, if it is possible, then I wouldn't say it's unfair nor would I see it as advantage, since all LFSers would be able to do it. Realistic or not.
And that matters because...? Most ppl currently change gears with auto clutch and a click on a button/paddle/shifter. Where's the skill, or even effort in that?
I'm happy to announce that Hugo Luis, a former member of the Brazilian racing team NitrO², have joined forces with us. Hugo is 14 years of age and lives in Brazil. Beside racing in Live For Speed, he also karts a bit for fun - he possesses a great deal of speed and we are looking forward to see him on the track in actual races.