My dad used a bike seat for me, which was doable since my brother and I were different ages and weren't often going to the same place. There are of course bike trailers for hauling 2-3 children around and don't forget pedicabs which regularly haul around 3-4 adults.
After you get used to it you don't really feel exhausted. Yes commuting 20 miles by bike is definitely an upper limit, at least for me, but I do know people with longer bike commutes.
So assuming you fuel yourself with pure beef, the most unsustainable food I could find, you'd need about .85 kg to get 2000 calories. On average the production of beef releases about 13.3 kg of CO2 per kg of beef, so we're looking at 11.305 kg of CO2 per commute. The average CO2 produced for a medium sized car is about .5 kg per mile. So for the same 40 mile commute you're looking at around 20 kg of emissions. So even if you choose to only eat the most unsustainable food it's still better than driving. If you switch to pork or poultry you can reduce that 11.305 kg of CO2 by about 75%. Cars just don't even come close.
After you get used to it you don't really feel exhausted. Yes commuting 20 miles by bike is definitely an upper limit, at least for me, but I do know people with longer bike commutes.
So assuming you fuel yourself with pure beef, the most unsustainable food I could find, you'd need about .85 kg to get 2000 calories. On average the production of beef releases about 13.3 kg of CO2 per kg of beef, so we're looking at 11.305 kg of CO2 per commute. The average CO2 produced for a medium sized car is about .5 kg per mile. So for the same 40 mile commute you're looking at around 20 kg of emissions. So even if you choose to only eat the most unsustainable food it's still better than driving. If you switch to pork or poultry you can reduce that 11.305 kg of CO2 by about 75%. Cars just don't even come close.