And that reminds me on two manga of Sin-ichi Hiromoto (my bad, i had found only one of them!) named “Violent Runner Vibrator” and “Sexmachine”. In both this manga, humanoid creatures can turn their self in moto form and are able to transform sexual energy in cinetic energy to make this vehicle form move!

oh yes, human mind is really dirty sometimes!
He had work at the arts of Fortified School, a real dark manga i had really enjoy, and at the manga version of Star Wars……a little talent and really poliedric!