Tagged: emissions

Emissions from new vehicles dropped 12% between 2007 and this year, according to a new index by the University of Michigan Transportation Research Institute. 

But it’s unclear if that trend will continue in the future.

For decades, there was little increase in the fuel efficiency of the new cars people bought. 

That changed starting in 2007.  Consumers turned to more fuel-efficient cars and they drove fewer miles, lowering overall emissions. 

But it probably wasn’t environmental concerns that caused the shift.