Why was mad dog going to Amarillo in out of the dust?

In "Out of the Dust" by Karen Hesse, Mad Dog is heading to Amarillo to seek a better life and escape the harsh conditions of the Dust Bowl. He hopes to find work and stability in the city, as the relentless dust storms have devastated his family's farm and livelihood. His journey reflects the desperation and resilience of many individuals during this challenging time in American history.