What Earth posted could be possible. Only NASCAR titles I have for PC are NASCAR Racing (1994), NASCAR Racing 2 (1996), NASCAR Racing 1999 Edition, and NASCAR Revolution (which I have not played, but I heard was pretty bad). I think it would be interesting to own certain racing suits for certain cars. Your team will likely have the same colors. If sponsorship comes into play, it would be great to pocket some extra money by simply showing off your sponsors as well as your colors. The thing to remember that your outfit won't be fully showcased all the time. At least it would be interesting to be in your outfit from head to toe.
If something like this develops, I'd love to also see respective features for female racers as well. Think about "Live for Speed" for a moment. The different race team models have the same livery around it, but different body types are available including that of female racers. Imagine being your own Danica Patrick, Katherine Legge, Claudia Hurtgen (she still racing?), Yanina Ickx, or any other past or present lady racer in GT. I think it's something I'd like to see if such a driver customization deal comes to form.
I'm not saying PD should come up with all this Driver Gear focus, but it would be interesting if it were featured. Some just think PD has more to worry about besides this. I just think this would be an nice package when you're not racing. The ability to make something yours in a game leads to great satisfaction. Especially when you can make your dream objects. I love the prospect of making my own virtual team in Gran Turismo. I envision painting cars in my own team colors including my own outfits. It's just making my own cars MY own cars. My own progress into my own race team. It would be another nice distraction much like when GT4 introduced Photo Mode. Just sweetens the experience a bit more.