When he taps into the Speed Force , Bart appears to have electricity crackling around him .
The Speed Force inside Bart becomes so lethal that Bart initially wears the Flash suit while running in order to prevent it from killing Bart .
When he taps into the Speed Force , Bart appears to have electricity crackling around him , and the Speed Force inside him becomes so lethal that he initially wears the Flash suit while running in order to prevent it from killing him .