1. I use MapMyRide to calculate the number of miles we would DRIVE if we were taking the car to the location. Even though we might use alternative, safer, perhaps longer routes for biking we want to know the savings based on how we would drive to the location. Please note, I kinda hate MapMyRide as I don't think it's exactly user friendly, but I don't know of a better option. I hope to kind of build up a database of places we travel frequently via bike so that I don't have to use the website.
2. I use another app, GasBuddy, (or online) to determine the price of gas based on where we normally fill up specifically for the day we rode our bikes instead of drove.
3. I have put together a spreadsheet (shut up, I'm an engineer!) with two different pages - one for savings based on driving the Honda Element and one for driving the Toyota Prius. This makes a huge difference because the Element gets about 20 mpg and the Prius is about 40 mpg. We generally drive the Prius everywhere so any time it's the two of us riding our bikes or just Dave riding his bike, we do the calculations based on the Prius. Now, when I start riding to work, because I drive the Element, the calculations will be based on that car. Here's how the calculation works:
(Miles X Cost of Gas) / Miles Per Gallon = Savings
At the end of the month I plan on adding up both spreadsheets and then keeping a master spreadsheet with these total savings to see how much I can save in a year. It would be nice if it was actual money and we could reinvest it back into savings for a new car or something else.
What are ways that you are saving money as the gas prices hit new highs? What are some of your general savings tips? What are you willing to splurge on? Do you make spreadsheets for things?