Sending them a query like that is a bad way of gaining unwanted attention to yourself and this game. If this government-owned company is trigger-happy with copyright legalities, they can just start a lawsuit against Sony. This has already happened with Virag with the GT5/6 roadside advertisements that appeared in Monza. Some companies are just run by cronies, and the worst scenario is that they could even scrutinise you for attempting it.
Think of it like this. If you come from a dictatorial country and have connections with the powerful higher ranks, would you show them some cheeky Countryball comic lampooning about your country made by a complete online stranger from another continent?
The SVG uploader is unique because SVG files are technically traced, manipulated lines of geometry that resemble a visual, and therefore it is 100% legal to vector copyrighted logos because they're creative commons owned by you or by an individual artist. If you made a vinyl group of that company in Forza's vinyl group system (using in-game primitive shapes to save a fixed design with a collection of individual shapes), you wouldn't get a copyright strike. Uploaded decals only get taken down by PD if they violate simple misconduct rules (profanity or inappropriate) or are planned to be added into the game, like the FIA decals.
When EmuParadise shut down, it wasn't after years of service till they were sadly closed by legal C&D lawsuit. If you play 'nice guy' now, you would probably never get your mail service decal into the game.