Lorry!
Being on a few international boards, I know you substituted "truck" for "lorry". I have no idea where the word "lorry" came from, however!
The bicycle (or, as pictured, tricycle) deliveries can make sense depending on the city layout. In any case, a more varied approach might make sense. UPS trucks are normally loaded up and make long rounds, whereas a cycle could only be able to carry enough for a few stops. But the cycle would be less "in the way" at its downtown stops. The electric trike make sense, too, since it could potentially allow the delivery person to travel further each trip.
Another thing that could be done would be to use more pickup trucks instead of large delivery vehicles, where appropriate, but I recall seeing a few "hot shot" delivery pickups a few years ago, and now they seem to have disappeared, so perhaps the market isn't really there for it.