Thanks for the response. I am also trying to get cancellable reservation in the range of $450 - 500. It comes to appo $50/day.But not successful. Expedia / Travelocity etc offer at the range of $550 - 600. The best rate that I could get using Hotwire from this site, given an option to reserve minivan for $405. But, my card will be charged and non cancellable. Four adults and two kids are travelling and believe minivans are comfortable, else should try full size SUV which is currently going for double the price of minivan :)