Flatout, the no-seatbelts racing game with ragdoll physics for when your driver smashes through the windshield, is free on GOG
Flatout is an older game—it came out in 2005—but it's a lot of fun. What it lacks in an accurate driving model, it makes up for in destructibility of both car and driver: When you smash into something at sufficient speed (which, in my case, is quite often) your helmetless driver is ejected through the windshield and over the hood, screaming and ragdolling into a horrific sprawl on whatever they ultimately hit. Good times! Anyway, it's currently free on GOG as part of the week-long Valentine's Day-themed Love at First Pixel sale.