Obama tried to close a big pollution loophole. Trump wants to keep it.

The Environmental Protection Agency is trying to protect a loophole that allows vastly more pollution than is typically permitted from heavy-duty commercial vehicles — all in the name of helping out a Trump supporter. At issue are glider kits, new trucks that come without an engine or transmission so they “glide.” This allows you to customize the powertrain — the engine, transmission, and drive axle — often with refurbished hardware, thereby saving around 25 percent of the cost of a new, complete truck.
Read more: https://www.vox.com/energy-and-environment/2018/2/17/17020194/glider-truck-pollution-loophole-trump-epa?source=Snapzu