Like many movies, Sonic The Hedgehog got a test animation. Apparently the test showed something like Sonic, with an extremely early design, in an american road. He say something about Tom having a date and then he runs.
While we do have 3 blurry screenshots, the full test is currently nowhere to be seen, maybe is somewhere in some Paramount vault (or even Sony's vault since the OG version was going to be made by them).
I really want to find it both for historycally purpose and for, of course, the weird early design (even earlier than the 2019 trailer version)