Though Gran Turismo PS Vita is not in development series producer Yamauchi does have a few ideas up his sleeve, more details inside.......
When asked about the possibility of a PS Vita version of Gran Turismo series producer Kazunori Yamauchi replied with:
If we were to make it, we'd like to make use of the ability to play anywhere and the ability to use 3G at any time.Let us know what features you want in a PS Vita version of Gran Turismo in the comments below!
Source:
http://andriasang.com/con22g/yamauchi_china_joy/