Here is an example: http://tools.pingdom.com/fpt/#!/cp0wwy/http://www.shearcomfort.com/Car-Seat-Covers_CDN.asp
Pick any image, say 2014_subaru_outback_mini.jpg
then you can see it appears twice: once from cloudfront with 0 bytes and the second time from the actual domain shearcomfort.com
Can anyone explain what is going on here and how to make all the assets come only from cloudfront and not from the home domain?