Internal combustion vs hybrid
In this case the IC vehicle doesn’t pollute nearly as much as the hybrid. True, it’s not nearly as fast as the hybrid, nor does it have the cargo capacity (we’ve put 800 pounds of paving bricks into a 2001 prius and gotten it back from the builder’s supply store w⁄o ripping the bottom out of the car; I don’t think I could even move the mountainhack if it had 800 pounds of cargo (on a trailer than can carry 800 pounds w/o collapsing or exploding the rear tire)) but I don’t need to lug around 3500 pounds of machinery for 9944⁄100ths of the errands I do.
Alas, the pollution from my bicycle is more tightly regulated than the pollution from an automobile.