Your friend must be involved with a fleet of Internationals. They did as much damage to the diesel business recently as GM did in the 70’s.
Here is an older report on the department’s alternative fuel effort.
http://www.nyc.gov/html/dcas/downlo...l_law_38_DSNY_2012_final_report_3_25_2013.pdf
I have been involved with all of the hybrid collection trucks at one time or another.
CNG has come a LOOONG way! It’s huge in the West and Southwest, especially in Refuse. The problem is the FDNY. They won’t allow the infrastructure to run a CNG fleet citywide.
The same problem happened for a experimental fuel- Dimethyl Ether (DME).
Read this.
https://www.trucknews.com/equipment...w-york-city-department-sanitation/1003076705/
This fuel is very groundbreaking and leading edge. It’s used in Europe, but there’s hardly any infrastructure here. The dept. goes ahead with this pilot, only to again get slammed by the FDNY. They didn’t even want the truck in city limits, but they made a deal to keep it by me, and fuel it in Jersey. Amazing huh?
Regarding quiet EV’s and hybrids for that matter, NYC Parks had to put beepers on everything because you’d be strolling in a park, and there would be a prius sniffing your butt. You’d never hear it in electric mode!