If you look at the top of this page, there is a link for 'TTOL Sponsors.' Click on it, then scroll down the page to 'SXM Sponsors' and there will be a link for 'Empress Rent A Car.' Click on that link.

Empress' site has a list of the cars they rent and a number are listed as 5 passenger cars, although for some of those vehicles, that may be a squeeze.