Would it be possible to sort data by particular categories (maybe via drop down lists)?
For example, how much did I spend in 2008 on gas? How far did I drive in 2007? What was my cost/mile in 2006? What was my average mileage in August of 2007? Sure, it's possible to download the Excel spreadsheet and tinker, but wouldn't it be more useful to have that done through the site on each car's page or even total per user on the user's page? Thanks.