alt Hacker NewsI see electric Silverados and Hummers (not a truck, but effectively the same vehicle as the electric Silverado) all the time, usually pulling landscaping utility trailers (flatbeds with huge commercial lawnmowers, etc.). I have no idea if this is economic or not (they definitely aren't cheap) but I've heard electric towing can't be beat for responsiveness, torque, etc.
It's pretty economical. Towing about halves your range. So you're still paying quite a low gallons/mile equivalent. However, that decreased range is a killer. So it makes sense why you'd see them doing lighter duty local work like landscaping.