Meh, i gotta admit. Ive used tons of car mods - but that was a long time ago, when the first ones came out. I loved them for about 0.1sec only since they are all so horrible. For now i think the original lfs cars are the real deal, love to drive with them. Just put some higher resolution textures in them (another colors for them etc) and u got alot nicer car.
For some reason i believe 80% of demoers use vob mods. And about 30-50% of S1/S2 owners. Ive seen quite a few discussions online that goes like "omagawd, dis tuned car is so awesome, download it at www.sitename.com
" and such stuff. They are like making other people use them etc, sucks so bad.