I assume you are talking of the sib weight and bulk packed down at around 40kilo?
If so my thoughts are a skate or even a garage crawler though the wheels may be a bit small on the crawler, thats for moving the bulk around from the car, once at the tailgate or boot, tip it on end smile at a passer by and have half each
getting it out is just gravity.
If its the outboard then you can buy frames that assist you to load/unload the motor.