Apparently nothing! We were at the shop a few weekends ago and Trevin decided to climb into one of the cars so he could drive at the steering wheel. I immediately went to get him out, because I thought it wasn't safe... But Gage stopped me and said he's fine, let him play! Sometime Gage worries a lot and then you have days like this. So unpredictable, I love him!
Trevin played there until we finished unloading rocks and he had a blast!