They were beyond eager to get the information about the buried valley in Chilad, but they were not so impatient to go to the foster parents' house right in the middle of the night. Kevin's mother was sleeping soundly, and they shouldn't disturb the lady's rest.
That was why the young couple only visited the Lowell residence in the morning before Kevin went to the lab for work. Kris was the one who drove Kevin's car, choosing to drive the silver car instead of the red car because Kevin's car was safer for everyday use.
Kris was attacked once while in Chile with Jack, and his apartment was also attacked. He couldn't help but choose to be more vigilant by driving Kevin's car.
The foster parents welcomed them, and the hostess even offered them to have breakfast first. However, Kevin politely declined the offer saying that he and Kris had breakfast beforehand. It wasn't just a bluff because they did have breakfast.