"G'Day, Duel Mate!"
From the back cover:
The economic superpower of 2038, Australia has triumphed during the crises that have ruined a world. Aussies eat "real" (non-algae) food, drive petrol-guzzling cars, and support national and regional duel circuits. But how can visitors to the Land Down-Under know what perils await? Consult ... The AADA Road Atlas and Survival Guide, Volume Four: Australia"
Includes rules for petrol and ethanol as fuel for GURPS Autoduel.