What took Polyphony Digital so long to release Gran Turismo on the PSP? - Quora

What took Polyphony Digital so long to release Gran Turismo on the PSP? - Quora

Gran Turismo (PSP) - CNET

What is the best video game console/system of all time? - Quora

Gran Turismo 7 Update Coming April 7 – GTPlanet

What's the most anticipated game for the PS5? - Quora

Is Gran Turismo Sport worth buying? - Quora

How to get easy cash on Gran Turismo 4 - Quora

What is the best video game console/system of all time? - Quora

Why are all video games roughly the same price, even the ones that are much more expensive to make? - Quora

Why is Sony slowly rolling out the release of 'Gran Turismo' instead of promoting it with movie stars? - Quora

Why is Sony slowly rolling out the release of 'Gran Turismo' instead of promoting it with movie stars? - Quora

Next Gran Turismo 7 Updates Will Fix Credit Payouts, Polyphony Digital Apologizes - GameRevolution

Why are Gran Turismo 7 Fans Outraged? What did Polyphony Digital do to calm the Gran Turismo 7 fans down? - Quora

Apparently it takes 270 days (almost 9 months) for Polyphony Digital to make a car for a Gran Turismo game. Thoughts? : r/granturismo

Gran Turismo (PSP) - CNET