And they would know best, of course, but we can't help but long for an upside-down bathtub with rear air-cooled engine, rapid-fire exhaust note and glued-to-the-ground ride.
The plane's fuel injection system squirts gas into it, a lighter sets it on fire, and exhaust roars out of the nozzle at about 1750 ºC.
The capital was a vast slum of seven hundred thousand people, the sky at dusk a purpuric haze from the smoke of wood cooking fires, the exhaust of ancient colonial-era vehicles, and windblown sand.
Air quality in the Indian capital, one of the world's most polluted cities, is usually very poor due to road dust, open fires, vehicle exhaust fumes, industrial emissions and the burning of crop residues in neighbouring states.
They work in cyclic fashion: while one burner fires, the exhaust gases flow through the other where their heat content is passed through a porous bed of ceramic material around the burner and then stored.
Formaldehyde and acetaldehyde occur naturally in the environment and are produced in forest fires, automobile exhaust, and tobacco smoke.
Other combustion sources contributing to PCDD/F emissions in industrialized countries include metal reclamation, wood burning, chemical fires, automobile exhaust, cement kilns and cigarette smoke.
The spokeswoman, who did not give her name, citing Israel Defense Forces protocol, said soldiers fired after exhausting all other means to disperse the group.
But recurrent and worsening smog the result of car exhaust, fire smoke, dust, sand and more trapped in the mist, especially over the big cities is far deadlier.
A fire in an exhaust fan for one of the giant ovens at a Nabisco bakery in Bergen County, N.J., halted production of Oreos, Fig Newtons and other products yesterday.
The Batmobile in Arkham Knight is metal-plated beast; its moving panels make it seem as though it's breathing and every burst of fire from the exhaust seems like a release of pent-up rage.
