my wifes pickup has some slide brackets inside lip both sides of bed
makes it real easy for upright MB
right pedal bungied to one bracket
front wheel bungied into corner of truck
or could use two as used with garden gate ((handle))
two handles can be screwed or bolted onto sides of bed -- so as to stand MB up
I would worry about the gas leaking but the motor oil is fine as those engines are basically a dry sump. My partner crashed his once and he commented that even while upside down it was still running and no harm was done. Well except to his shin anyway.