Every GuyWay car is a fully electric Tesla, with zero tailpipe emissions. After a trip the app shows an estimate of the CO2 the trip avoided, and your profile shows the total for all your rides.
How the estimate is made
We compare your trip with the same distance in a petrol taxi.
- The petrol taxi. A Toyota Premio, the most common taxi in Georgetown, using 8.5 litres of petrol per 100 km. Each litre burned releases 2.348 kg of CO2, and producing and shipping that litre adds about 19 percent more. That is about 238 g of CO2 per km.
- Your GuyWay car. A Tesla uses about 0.24 kWh per km, measured at the charger. Charging it still uses electricity from the Guyana grid, which we count at 0.45 kg of CO2 per kWh, the figure for the grid once the gas-to-energy plant is running. That is about 109 g of CO2 per km.
- The difference is the CO2 avoided: about 129 g for every km you ride, a little over half.
The distance is the distance the car actually drove with you on board. Trips under 1 km are not counted.
What the numbers mean
- Litres of petrol not burned is the petrol the same trip would have used in a Premio.
- Trees means how many trees it would take a whole year to absorb the same CO2, at 22 kg per tree per year.
What is not counted
The estimate does not include the drive to pick you up, building the car or its battery, or offsets of any kind. When the factors change, for example when the grid changes, new trips use the new figures and past trips keep the figures they were calculated with.