.htaccess rewrite subdomain to directory?

Question

Apache HTTP Server

Is it possible to use .htaccess to rewrite a subdomain into a directory?
Example: sub.domain.com shows content domain.com/subdomains/sub
rewritten to .htaccess but doesn't work

RewriteEngine on
RewriteCond %{HTTP_HOST} ^(.*)\.domain\.com
RewriteRule ^(.*)$ http://domain.com/subdomains/%1/$1 [L,NC,QSA]