For the First loop I choose was this establishing shot of a city skyline. It uses motion blur well to mask any repeating, to make it appear as one continuous shot.
I chose this because of its use of low speed in order to keep the loop continuous having the viewer and the light constantly moving away from each other but also appearing to be in pursuit of.
For this gif I chose because of its use of editing making it appear that the bicyclists are close to hitting each other but nearly miss in order to beep continuous motion.