Q. How often do you cycle instead of taking the car?
Endpoints:
Never, always drive - 0 kg
Always cycle - (2.01) x (7 days) x (4 weeks) = 56.28 kg CO2
Midpoints:
Cycle a bit - (56.28) x (1/3) = 18.76 kg CO2
Cycle a lot - (56.28) x (2/3) = 37.52 kg CO2