I did have the upgraded truck, which meant every time the vehicle died, which was a lot, it restarted again. This is what I want.
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These are supposed to make their appearance this year, but I know that we won't get them. Maybe we'll get some new hand me downs.
Those are being made by Oshkosh Defense here in Wisconsin. They make vehicles for the military.

USPS Oshkosh Defense Mail-Delivery Truck Spotted on the Street
The elderly Grumman LLVs, in service since at least 1994, are soon to be replaced by these new trucks with airbags and A/C, and some will be electric.
They do have many cool new features.