big brother

If you don't give me back my toys I'll tell my big brother!

While the little MTU Vee-12s in the Class 800 bi-mode generating units have lower overall emissions than their big brothers in the Class 43 IC125 power cars, in the case of CO₂, when you burn a litre of diesel fuel you get 2.8kg of CO₂. [a possible error in the original text]