• @[email protected]
    link
    fedilink
    English
    2310 hours ago

    Alright, I’ll take the bait. Let’s do some recreational math

    This web page contains average passenger car fuel efficiency broken down by year. The most recent year available is 2016, so we’ll use that: 9.4 km/L or 22.1 miles per gallon. A gallon of gas has about 120MJ of energy in it. So, an average car requires about 120,000,000 / (1/22.1) = 5.4MJ per mile

    This web page has calories burned for different types of exercise. I separately searched and found that the average adult in the US weighs around 200LBS, so we’ll use the 205LBS data, and I’m going to assume that “cycling - 10-11.9 MPH” is representative of the average commuter who isn’t in too much of a hurry. That gives us 558 calories per hour, or 55.8 calories per mile (using the low end of the 10 to 11.9mph range). That’s equal to about 0.23MJ per mile (as an aside, it’s important to note that the calories commonly used when talking about diet and exercise, are actual kilocalories equal to 1000 of the SI calories you learned about in school.)

    Moral of the story: an average bike ride consumes around 20x less energy than an average drive of the same distance.

    • @[email protected]
      link
      fedilink
      English
      21 hour ago

      Holy shit what kind of cars does that study take into account/what type of vehicles do people drive‽ (Granted I do not know how fuel [in-?]efficient worries/trucks are but O.o)

      And yes I am aware that 2016 is 9 years ago now, but I know I am driving badly when my car consumes slightly more than half as much fuel as this average and I am rapidly thinking about just how much money some people/companies are spending on gas!

    • Redex
      link
      fedilink
      English
      189 hours ago

      We also gotta keep in mind that cycling makes people healthier, so it has that benefit, and that it can also potentially replace some exercise people would be doing otherwise, in which case you’re basically moving for free since you would have expanded those calories anyways.

    • @[email protected]
      link
      fedilink
      English
      108 hours ago

      Worth noting that cars can fit more people in them than bikes can.

      So with that in mind, clearly the true moral of the story is that clown cars are the most efficient method of travel.