Also got the same message about wanting to purchase my vehicle....

got a text from this number refering to an add on craigslist. a marine biologist that wants to buy my car for his brother. asked me to create a pay pall account.

Don't respond to them.
I just went through it.
They text  you so you contact them by email and then they have your email address.
If you let these craigslist losers contact you by email you'll see at the bottom of each email, craigslist puts a link there that you can click to report these scammers.
If you text back and forth you can't report them.
Just text back that you know they are scammers and  you are reporting them - the texts will stop.
Thats what I did.

same here, kepts texing, and need my pay pal

Yes blowing up my phone to purchase an auto from Craig's list. Plz give more details