I was looking for information on the Killer Kart design when I learned of a horror movie produced in 2012 with an interesting title.
IMDb - Killer Kart (2012)
http://www.imdb.com/title/tt2415470
Facebook - Killer Kart
https://www.facebook.com/killerkartmovie
This movie could be adapted as a Car Wars scenario. A nearly-destroyed Killer Kart subcompact in an arena becomes a sentient vehicle. Tired of not be respected by autoduellists, it causes chaos. Rules from the article "Vampire Cars" from ADQ 9/3 could be modified for this scenario. :o)