This is how Lightning and Shu in the warehouse goes in Cars: Heroes in Shining Metal.
[Lightning and Shu sit together on the drive when Shu sees the tiny nanobot starting to move]
Shu Todoroki: Sore wa henda.
[He drives away, Lightning not noticing]
Lightning McQueen: These buildings sure are great. Am I right, Shu? [realizes he's not there] Shu?
[He sees Shu halfway across the street, cars honking at him as he passes]
Lightning McQueen: Shu!
[Lightning chases after him]
[Shu follows the tiny nanobot to a warehouse where Lightning finally catches up]
Lightning McQueen: Shu, what were you thinking? [sees he's looking at a warehouse] Whoa.
Shu Todoroki: Come with me. [goes inside]