South City has so many streets, but usually most are blocked off because they aren't part of the layout you're using at that moment. I think it would be cool to make all the streets available for use (couldn't have an official race this way, just a free roam [practice] mode); this would open up a fun aspect of the game and greatly improve the City Driving and other fun servers. What do you think?

its not possible

Finding many similar threads with the search function - that's possible. Better than possible, actually - it's a certainty!

Agreed, please search, there has even been another thread on this very topic most recently. We don't need another.