Tesla's new El Camino.
Like I said in the Ford Mustang thread, the teardrop is the most aerodynamic design. This is a squared off version of a teardrop. They likely needed to optimize aerodynamics to make the truck as efficient as possible so it can use it's electrical load to haul weight. Make it like a Gladiator and it's range for hauling and towing would probably be 20-50 miles at highways speeds. A person needs to spend an extra $10,000 on batteries to get one of their cars up to a 300 mile range. The designers probably couldn't win with the battery weight and volume to get the electrical power needed to haul or pull what a typical Ford F150 would handle. Increases in power to haul mean they end up hauling more batteries. Eventually, you're adding more batteries just to pull the extra batteries around and it becomes self defeating.
Trucks should be diesel electric hybrids at best so they can get the torque they need to get moving under load, with the diesel then keeping them going for range. Most city trucks are used as cars so those don't really count. Their owners could just as easily use a car or SUV with a tow hitch and small trailer for the 1 or 2 times a year they put anything in the back. Our work truck on the Farm was a low geared straight six rear wheel drive and could haul and pull like crazy. You weren't ever going to win a race in it, but that wasn't it's job.
One of my wife's friends drove a Ford F150 because she wanted 4 wheel drive and it was cheaper than most SUVs and got better gas mileage. They put a cover over the back so she would have a trunk, but basically it was just the cheapest 4x4 car she could buy.