An Internet enabled, business-to-business computerized transaction system is disclosed in its preferred embodiment for use in providing rental car services for high volume users and comprises an Internet web portal through which the high volume user may access an integrated business computer network...http://www.google.com.hk/patents/US7275038?utm_source=gb-gplus-share專利 US7275038 - Web enabled business to business operating system for rental car services
