Can you program to detect click locations in App Lab?

Link to the project or level: App Lab - CodeAI
What I expect to happen: A student is using the Decision Making App project to create an app where you customize a car by clicking the car type, wheels, and track. He made this app for a previous project, but is adapting it to the Decision Maker app. On one screen, he has a selection of cars with a yellow rectangle showing which car is selected. He wants users to be able to click other cars and move the yellow rectangle. I’m not sure whether App Lab can detect click locations on the screen, or whether I should suggest he turn each car into a button. Or is there a better solution?