The Car Options Ontology is designed to be used in combination with GoodRelations for the commercial aspects of offers for sale or rental, and the Vehicle Sales Ontology for car features.
GoodRelations is a standardized language for product, price, and company data that can (1) be embedded into existing static and dynamic Web pages and that (2) can be processed by other computers. This increases the visibility of your products and services in the latest generation of search engines, recommender systems, and other novel applications.
Example of how to use RDFa markup to polish your products in Google Rich Snippets. Developed by Professor Hepp, the inventor of the GoodRelations standard for e-commerce.