The new high-performance electric trains continue to progress as they go through extensive testing. Earlier in the manufacturing process, the car shells underwent the "Squeeze Test" (shown in the above image) which verified the designed strength of the car shell under various stressors, including twisting, bending, and external pressure. More recently the truck (bogie) which holds the propulsion motors, wheels, and axles passed the structural and fatigue endurance tests. The electric trains will continue to undergo a range of tests to ensure safety and functionality.