Here is a pic of my homemade eSUB (electric Sport Utility Bicycle). It has a 48V 500W Grubee SkyHawk hub motor.
I still have detailing to do - tidy up the wiring and give it a paint job. I am also going to extend the bike rack towards the rear wheel. As you can see from the pic I have a full rear wheel's length of cargo space available. The existing bags are completely occupied with racks and batteries - two SLA's on each side.