Originally Posted by
WonderMonkey
I have a spreadsheet that has my drive commute. When I fill up I put the price per gallon. On days I commute I use the miles I WOULD HAVE DRIVEN and the price of gas I paid for that time and have it show me how much I saved. ALSO I put how much I spend on my bike to support my commuting and have it show me what, if any, real savings there are. Obviously this is not factoring in all the other benefits of commuting, just the financial side of it.
All the above was extra info at no extra cost. To get back to what you are talking about but in miles as well.
TCQ Established
Driving Home -> Work = 20m
Riding Home -> Work = 1h:20m = 80m
Math = 80/20 = 4.0
I could lower that by driving over to the bike path and leaving from there. I'd have do combine driving and biking but that's doable.
Driving Home -> Work = 14.5 miles
Riding Home -> Work = 17.1 miles (using perfect route)
Math = 17.1 / 14.5 = 1.18
I'd be interested in seeing what the cost comparison. I don't do such a detailed analysis. I know that each time I ride to work it saves about 3.5L in fuel, so currently I would save $3.50CAD. But I do have regular expenditures on bike-related stuff, so it may come out even.