if i sell my vehicle how long afterword can i file

well, it depends on you type of bankruptcy, why you are selling. Sounds like you are selling to hide assets.  The court will figure out and guess what, this action could nullify your bankruptcy.  It isn't hard to figure out.  With the new bankruptcy laws, usually longer time periods now will be covered.

Try www.attorneypages.com to have a direct consultation with a bankruptcy attorney in your state.  Here are some good articles to read on bankruptcy. http://bankruptcy-law.freeadvice.com/consumer_bankruptcy/

Usually all sales of assets within a certain time are automatically suspect. It seems like you want to pull a fast one on the gov't and the fact of the mattesr is that the gov't is on to such ploys.  You're not the first who has tried to hide assets then file for bankruptcy.  And you won't be the last.  But just like the gov't is mostly not fooled by such things, they will most likely not be fooled this time.