Rental car Best Price Guarantee doesn't include Hotwire. I called regarding rental car Best Price Guarantee as I find a better price on hotwire.com. Got denied by the rep citing the following wording:
"Rates on other opaque websites, where customers are provided with their rental car company information after the reservation is completed, are not eligible."
http://www.priceline.com/promo/big_d...ml?product=car