You may want to checkout MileageIQ which is an app you can install on your phone and track your trips and mileage.

Is it through an app, excel, or old fashion pen and paper? 

There's a lot to consider - but new construction and that low of a PP there are definitely much worse investments.

Side note, I posted this in a few other places on the app too.

they just go after whoever they talked to / interacted with / paid app fee to etc...  

One website and app for the owner.

Property Radar is just such a robust tool.Yesterday I went and looked at a few Timber properties I was interested in  both of them a good 10 to 15 miles back into the boonies.the app comes up it tags to google earth and then one thing I am very good at is direction and finding stuff being an old land sales guy.I orient the phone and the app on the phone to north.. and in 2 minutes I found the parcels .. no address's nothing but the app and what's cool is the lot lines lay over the google earth.. what could have been and Easter egg hunt took me a matter of minutes.Now the only thing I would like to add to the app is USGS topos.. out here in our area is quite hilly or mountainous really. 

I'm a full time student but I rent out my car and have done so for about a month which has given me around $350 using the app TURO.

He's requiring an additional 1.875% penalty fee ADDED to the balance of the loan (essentially increasing the IO payment every month, which means it's more like a 3% increase). 

Also by integrating apps.