the car engine is running less than an hour when the roads clear, and over 3 hours when it is congested. And it creates more pollution in the stop and go traffic FOR THE WHOLE THREE HOURS. Whereas the smooth fast ride burns clean for less than an hour. Come on man, you can't be.....?
It is a piss poor choice. Period.
EDIT: YOU EVEN STATE THE COMPARISON IS TIME OF THE MOWER VS DISTANCE IN AN ICE VEHICLE. APPLES VERSUS ORANGES MAKES SENSE TO YOU? Have a good life.
Depends on which pollutants you're talking about. If it's CO2 then... yah... a car is worse because physics. If it's all the other stuff then burning fools fuel in a lawn mower is worse because it's a straight pipe with no emissions controls. Doesn't help that most lawn mowers also but a bit of oil too.