Havent sell a car to a buy and sell guy though but have talk to some people
who says they wont sell their car again who will just hand them a blank deed of sale and let them sign it.

well it makes sense i mean will that blank piece of paper will hold as evidence if makapatay kotse mo and inabandon yung sasakyan? Well even mapayunayan mo na you were not driving malaking perwisyo pa din.

Or are there any other ways?