Hello, dear Users.

I want to learn English and translate my books.
With some words or phrases, I'm not sure it's right. Could somebody check the following text to see if it's right?

The next four days only passed slowly. The children had packed their bags long ago and could not wait for the departure. However, four days had passed. On Saturday morning, the children packed their last things. Meanwhile, Mr. Seifert checked the oil level, the tire pressure, and the cooling water of the car. Mrs. Seifert prepared the food basket for the breaks.
A few moments later, everyone was sitting in the car. Their father drove, Mother sat in front. Lisa and Enzo sat in the middle seats. Ingo and George were in the back of the car.
Lisa watched in the passing landscape. "How long we will drive to Daisendorf?"
"When we take a break, it will last about three hours and forty minutes," Ingo replied wisely.
"How far is it?" George asked.

Thank you.