Why did the dad not stop going to the south?

Kenny knows that Dad is planning to drive straight through to Birmingham, because he overheard Dad talking to Mr. Johnson about it when Mr. Johnson, who knows a lot about cars, was looking over the Brown Bomber. Dad knows it will save money, but he doesn't tell Momma about the plan because it would upset all her plans. Dad makes fun of his wife's careful planning to Mr. Johnson.

Because the watson family is black and unfourtunaly they cant tay where ever they would like the have to find a specific spot the they ar e aloud to rest.