This is a neat tool that was brought to our attention by Shadowscope . Basically it is a service that you can enter your mileage when you fill up your car, then the service does all the mileage and calculations that you could want.

The cool thing about it is that you don't have to wait till you get home on the web, you can enter the details via twitter, right at the pump. Very cool!

My Mile Marker is here.

A tool to enter and manage your car mileage. See charts of your distance traveled over time, and compare it to your fuel economy. All in a nice, easy-to-read format. Twitter enabled.