Cool idea, any ideas on how to approach that development wise? Is it possible to create a year drop down menu that can select more than 1 year at a time?
There are a couple different ways to do it. One example as I mentioned would be like eBay's search [1], where the parameters are input by text. Another good example I've seen is on the KSL Classifieds car search website [2]. There it's a single drop down, where you can select just one year, or if you input two years, it will become a range.
[1] http://imgur.com/WjkkF [2] http://imgur.com/QutTt