"Cap and trade is not going to get the clunker off the road. It requires regulations, fines and emissions checks to get the clunker off the road."

wildly wrong

the cap and trade applied to utlities and chemical plants will have precisely analagous effects
ie get the clinkers off first and fore most

cars in their millions may indeed require
other methods then emission measurements
though i cop could prolly get handed a device able to create probable cause or what every for a pull over inspection ticket
tradeable car emission warrents
is not out of the question if loosely applied

income effects etc would need off sets
getting the program rolling might lead to cries of
a one time reward for a dirtier then thou motor