I had a project that required getting 780,000 zipcode-to-zipcode driving times to determine who could be recruited to visit a given hospital into a clinical trial. I programmed both Google and MapQuest queries and found MapQuest to be 5 times faster and they wouldn't charge to use it. I emailed them as requested to let them know what I was planning. They said to please only use two parallel queries at a time. Four days later I was done. My research goes on.