I ride a cargo trike, here in Mérida.

I realize this is probably nothing like yours, but no one else has come up with an answer. It being single speed, and short are the biggest drawbacks. Harder to pedal than a bike, for sure. Heavy. If yours is geared, it will make a big difference. I have plans to put gears on this one so I can use it more like a car, to haul the dogs around. We have nothing that even hints of a hill, and still I get off to push it across an intersection with a very slight rise (a crowned surface), because it is very difficult to start from a dead stop. If this helps, then great. If it doesn't then maybe it will give you some things to think about.