Hi: Here's my understanding of your project: First, you want to create a list of fuel service stations in Australia. You want to capture the following fields: Service Station Brand, Fuel type available, Service station GPS coordinates, Distance (s) from nearest major road or highway(S), Current fuel price if available, Opening hours. Secondly, you want to overlay the location of the stations on a Google Map. Please let me know if my understanding is not aligned with your objective. Additionally, I would like to highlight that fuel prices at each station might be little hard to get. Regarding my previous experience, I have made a heat map of business in Sydney for a client. I collected the data on number of business in each suburb of Sydney, generated a heat map and overlay-ed it on Google map. Please connect with me to discuss more.