Yeah and a motorcycle is almost as heavy as a car... if you compare a Honda Goldwing (379 kg) to a Citroën 2CV (475 kg).
I didn't say anything useful, but we sure cherry-picked ourselves out of the general statement that cars 5-10 times heavier than motorcycles!
Your sleep paralysis demon should send their resume to a few Hollywood producers if they ever get bored of only traumatizing one human at a time. A+ storytelling.