I have a long commute, 125 miles a day so I found a guy to ride with me that works at a place I go past everyday, we split the gas.
I also use acetone in my gas 2oz for every 10 gallons and get another 3mpg on average, also use real gas not the 10%enthenol blend, you get better gas mileage with 100% gas and a good grade.
Change to a lighter oil. Keep off the throttle as much as possible and use the the bump and glide techniques when you can, ie. speed up gradually and then coast some.
Raise the air pressure in your tires to 5psi less than the maximum rating, it lowers rolling resistance and increases mileage.
If you are going to idle more than 30 seconds shut the engine off, do not use the drive thru, walk in.
Turn the a/c compressor off for 2 minutes out of every 5, leave the fan running of course.
Engine off coasting is very effective but you must be in the right driving situation no stop and go, I do it going down long hills and slowing down for stop lights.
Using all of these methods I have raised my mpg by 10 points!
The biggest savings at the gas station is do not buy anything but gas, stay out of the store. I keep some bottled water from walmart in the car.
Get all the junk out of the trunk, every 100 lbs cost you 3% in fuel economy.
Combine trips with neighbors, it saves gas and time, plus you can make friends
Make a list of stuff to do and plan your trips, takes time and makes you think about the things you really need to do, instead of driving around just for fun.
Get a habit of cleaning or replacing your spark plugs and air filter often.
How about finding a job that is less than 63 miles away from your house? That would be a huge savings right there.