Two questions:
1. Where can I a Dodge/Mercedes/Freightliner Sprinter 10+ person
passenger van in the greater metropolitan DC area, including adjacent
parts of Maryland and Northern VA?
2. Where can I rent a RV-like (Class B) camper/motorhome version of a
Sprinter in the greater metropolitan DC area?

Cruise America RV Rental & Sales
(703) 243-2761
3210 10th St N
Arlington, VA 22201

Recreation World RV Center 
Your Full Service Recreational Vehicle Dealership. Family Owned &
Operated Since 1993.
Your Full Service Recreational Vehicle Dealership. Family Owned &
Operated For 12 Years
(410) 626-8226 
(301) 858-7211 
(410) 626-8302 (fax) 
(800) 398-2603 (toll-free) 
Email: adminrecreationworld.com 

Endless Summer RV's 
One of the east coast largest RV Superstores 
Proudly Serving Washington D.C. 
(301) 898-9848 
(301) 898-0630 (fax) 
(800) 301-4787 (toll-free) 
Email: thomendlesssumerrv.com 
business profile | phonephone | emailemail | map 
  http://www.endlesssummerrv.com Add to MyInfo AddressBook 

Budget Car & Truck Rental 
50 Massachusetts Ave NE, Washington, DC 20001 
(202) 289-5373
www.budget.com

if thats not enough I will give you more info

I did follow this up by phoning each one, but unfortunately none
actually rent either type of Sprinter van.