What, like Forza and the livery editor, it would take a lot of programming and would only be useful to those who understood how to create intricate paint schemes. Plus PD would have to pay for rights to company logos.
As Toronado said. Many threads covering this. I don't care for the idea personally, as that would take up alot of PD time for other stuff. I also like the race cars staying true to their real liveries, not having a Bentley Speed 8 pass me with a kiss my (insert) bumper sticker.
What, like Forza and the livery editor, it would take a lot of programming and would only be useful to those who understood how to create intricate paint schemes. Plus PD would have to pay for rights to company logos.
Well, unless you were able to buy/sell/trade/gift them...
As has been mentioned though, the idea of vinyls and liveries in GT5 has been covered time and again here. Feel free to add to one of the previous threads, like the one Toronado linked to 👍