"The flip you have to see to believe: LEGO 42140 in action."
Discuss how the latest update (42.14.0) has caused random "out of gas" signs to generate, even if the pump still has fuel. 42140mp4
is the official set number for the LEGO Technic App-Controlled Transformation Vehicle . Videos of this set (often saved as 42140.mp4) are popular for showing the "flip" mechanic. "The flip you have to see to believe: LEGO 42140 in action