Like Carmageddon? Love Wheels of War! The Carnage Council demands it! Racing, vehicular carnage, power-ups, (insane stunts, killing zombies, and upgradeable cars - coming soon), and STATS! There will be powerups/powerdowns, a credits system, upgradeable cars (via armour, offensive, and engine characteristics), checkpoint style racing (i.e, ability to roam), destructible cars, and a stunts system.
Here it is! Alpha 0.2 for linux and windows. Unzip into your ETQW directory; there is a 'Run Wheels of War' sample shortcut which shows what arguments you need.