The last phase of Chadian-Libyan conflict in 1987 is commonly known as the Toyota war. No, they weren't fighting over Camrys; rather, the name comes from the fact that Chad used Toyota trucks to mobilize its troops in the conflict. The war resulted in heavy defeat for Libya: it lost 1/10th of its army and 7 times more people than Chad.
The war began because then-president of Libya Muammar Gaddafi refused to recognize the legitimacy of the Chadian president. He attempted to have him overthrown. Eventually, the Chadian president retaliated and the war began. Learn more about it at the source.