A television production truck on eBay. Seller says was used by WABC-TV in New York and WXYZ-TV in Detroit

http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&rd=1&item=4529046898&category=63743

believed to be the first TV broadcast truck ever built.

Uhh...no way. The seller may believe that, but probably they just want you to believe it. RCA was making extensive use of their remote trucks (originally needing two trucks to carry the equipment for a remote broadcast) way back in the mid 1930s.

I don't see any evidence that it's anything other than an old truck.
No station markings or equipment at all!