Amazon.com: LEGO DUPLO Town Steam Train 10874, Toys for Toddlers, Boys and Girls 2-5 Years Old with Light & Sound, Push & Go Battery Powered Set with RC Function, Gift Idea :
Lego Duplo Connected Train App Tutorial Push and Go Lego Engine - 🎈 Train game for toddlers - YouTube
LEGO® DUPLO® Connected Train on the App Store
LEGO® DUPLO® Connected Train - Apps on Google Play