Raley's Retrofits Old Diesels With New Exhaust Filters

Raley's, a supermarket chain with stores in California, has retrofitted 16 older trucks with a new exhaust filtration system resulting in the trucks burning cleaner than brand new trucks and well-below the new air emissions standards, according to the company.The exhaust filter system, created by Johnson Matthey, reduces smog-forming emissions by more than 80 percent and virtually eliminates diesel soot emissions.

Here's a video on the retrofit from KCRA-TV.