Bootstrap the ISO from harddrive instead of burning

It is possible to bootstrap an ISO image, and install from it without ever having to burn to a CD. I think this should be automated (specifically for windows users). Use case: A Windows user wants to try out Ubuntu live. So they download the ISO. Normally they would have to burn the image to a CD first, which takes time and resources to do.... and then they have to know how to change their BIOS to booting from a CD ROM before the hard drive. By making some kind of script that lets them bootstrap right from the ISO they would: Not have to burn the ISO image to a CD, which will save time, resources... and also take out a point of error which could happen.... if the CD was not written properly for some reason. They might think this is Ubuntu's fault and not realize that their CD writer just created a coaster for some reason. Also it will require less expertise since they wouldn't have to fiddle with BIOS settings to change the boot device order. And thirdly, I believe bootstraping a live CD image from the hard drive would be significantly faster than booting up from a CD which has a slower read speed.