You can research a specific product: car, hotel, cruise ship, etc. You can access product information much the same way as Destination information. Most search engines have a category for travel that will then offer you choices and you can click until you get where you want to be.
If you have a specific product in mind, you could always guess what the URL is for the product.
For example, you want to take a cruise on Carnival. In the address box of your browser, type the company name followed by .com.
TRAVEL PRODUCTS and BOOKING OPTIONS
If you want to make your travel arrangements with one stop shopping, there are several booking sites that will allow you to make all of your reservations either through them or with links. These sites may include vacation packages, car rentals, hotel room booking, bargain fare finders, hot deals, etc.