
According to Cast Members Mike of Blog Mickey spoke with, Test Track at EPCOT is currently closed due to power-related issues.
Reportedly, Test Track started having issues shortly after 12:30pm and guests had to be evacuated from the attraction. In the photo below, you can see an empty ride vehicle in the window reflection.

Cast Members are unsure when the attraction will reopen, however are telling guests to enjoy other attractions at the park. Keep checking the My Disney Experience app for the latest information.
Stay tuned to Orlando Theme Park Zone for further updates on this developing story.
H/T Blog Mickey