Сделал так:
<form action="http://localhost:8008/C_M_Service/GetCars" method="post">
Получил:
1) запрос: "GET
http://localhost:61327/ HTTP/1.1
Accept: text/html, application/xhtml+xml, */*
Accept-Language: ru-RU
User-Agent: Mozilla/5.0 (compatible; MSIE 10.0; Windows NT 6.1; WOW64; Trident/6.0)
Accept-Encoding: gzip, deflate
Host: localhost:61327
DNT: 1
Connection: Keep-Alive";
2) ответ: "HTTP/1.1 200 OK
Cache-Control: private
Content-Type: text/html; charset=utf-8
Content-Encoding: gzip
Vary: Accept-Encoding
Server: Microsoft-IIS/8.0
X-AspNetMvc-Version: 4.0
X-AspNet-Version: 4.0.30319
X-SourceFiles: =?UTF-8?B?RzpcTXkgcHJvamVjdHNcQ2Fyc19wcm9qZWN0XzNcQ2Fyc1 9wcm9qZWN0XzNcQ2Fyc19wcm9qZWN0XzM=?=
X-Powered-By: ASP.NET
Date: Fri, 10 Apr 2015 08:42:49 GMT
Content-Length: 1061".