I had no one to pick me up after I returned a box truck I had rented, so I loaded up my bike into the back using the lift gate. When I got to the drop off location I opened the back and used to the ramp to drive down. Luckily I had a 26ft box and had time to stabilize myself. The look on the guys that worked there was priceless.
After I reclaimed my bike from the crooks that screwed me over (local shop), it and a parts bike were taken to my warehouse. After a time I brought them home to my house in a box truck I was using for the day. I pulled a 20' truck into my driveway (difficult), aimed it so the ramp would end up partially in my garage (much more difficult with the angle I had to take), and rode my bike and the parts bike down the ramp into the garage (pretty difficult since the bikes didnt run, no brakes on the parts bike, and the tail of the truck was uphill of the nose).
I got them home no problem, but I understand physics. It also help that my bike only weighs 525#wet.