Hum, on 23 January 2013 - 15:19, said:
Apparently you've never noticed those big tractor-trailer trucks going down the highway.
The stink and smoke takes my breath away !
And please don't tell me this is 'rare' -- I see and smell trucks like this every week.
There's obviously something wrong with that truck. Gasoline engines pollute a lot when they're not running properly also.
I've owned diesel pickup trucks, ran different types of machinery and grew up around logging trucks, and I've never seen any real pollution come out of em.
I don't know where the hell you live, but it ain't like that where I live.
And diesel doesn't smell bad when running properly either. I'd take the smell of diesel over propane powered vehicles any day.