Multiple sub domains, 1 MU installation

Can MU be configured where users have are given a choice of different subdomains for their blog? Attached is a graphic illustrating the format. User goes to http://www.TopLevel.Dom and can pick which subdomain they would want their blog to reside on.

For example, say we’re talking about a car blogs and the TLD is Preset subdomains might be,,,, etc..

Users would go to and have the ability to choose which subdomain they want their blog on. A few examples might be:,,, etc…

Hope this is a simple YES! or NO! question.

Thanks in advance!