If you look at things on a base level, we all live in one big fishbowl. It is a big one, but it is still of limited size and limited capability to absorb pollution. Cleaner diesel needs to happen, it is the right thing to do.
Fuel prices will rise, but not substantially. Who knows how many big rigs there are on the road, but each one represents a job, several jobs. Either the regulation will be scrapped, or the cost increase will be minimized. Either way, the economics of transportation will not be changed that dramatically. Use your voice to lobby for the right thing to do. Continued pollution can not be the right way.
Hopefully, a more efficient refining process will allow everyone to win.