Right now, 110 bike images are starting to loop randomly on your screen at the rate of one image every two seconds.
The slow rate is meant to conserve your system bandwidth. As each new image loads, it is stored in your temporary internet files (browser cache), so after all 110 images have been shown once, they will no longer be downloaded.
If you crank up the speed, you might experience small 'hitches' untill all images have downloaded.