PHP/Wordpress developer wanted

Need expert for simple WP work regarding user metadata. [login to view URL] field "car" in user profile(alow user to insert value,edit and delete it) [login to view URL] users to add another "car" field if they have more than one car(jquery). [login to view URL] values must be displayed on single.php-author details.(Cars: audi etc...array if more than one car is entered-cars:audi,bmw,ww) [login to view URL] dropdown for "cars" field so that visitors can browse users by car they have.(show only cars of users that posted atleast one article)(something like custom field search plugin for custom fields) i can offer max 40$ for this project, payable via paypal. Thanks.