Headless Hollow: Boardgame Reference Sheets
- A large collection of play-aids for several boardgames including Battlecars and Wreckage.
- http://www.headlesshollow.com/freebies_games.html

Lord Bosco's Chassis and Crossbow Rules
- Rules and scenarios for low-tech autodueling with detailed weapon lists.
- http://members.cox.net/bosco.bina1/carwars

Gear Jammer Motor Works
- Features player created cars and race tracks.
- http://www.talesofadventure.net/carwars/mainpage/index.php

Kannik's Games
- Features alternative weapon statistics and movement charts, all in Adobe Acrobat format.
- http://www.madcoyote.com/kannik/rpg.html

Sean Lambert
- Small collection of arenas and photographs of Hot Wheels miniatures useable as counters.
- http://www.aphrodite.com/~sum1els/carwars/carwars.html

Jeff Barrett
- Excellent source of record sheets and charts in Adobe Acrobat and Excel formats.
- http://www.jeloba.com/jeff/games/carwars.html

Frothers Unite
- Variant rules for damage, maneuvers, targeting and handling.
- http://www.frothersunite.com/files/UnclEvl/CarWars/CarWarsIndex.html