<prompt> Human: Looking start better cordoning off my fuel budget I have an exceptionally long commute each day of 200 bi-weekly into an envelope-type system but am hesitant to leave an envelope of cash in my car.Im asking rpersonalfinance, does anyone use as system based on a plastic card that works well? Im thinking of loading a gift card with the budgeting amount periodically and using that but am open to other options that wouldnt leave me attached to a single gas station chain. I could definitely be able to use the same chain for all my fueling needs, as they have the best rewards program available, but am thinking that a better way would be able to reload electronically directly from my bank account.tl;dr: Need a plastic option for my fuel-specific budget that doesnt tie me to a specific gas station chain and can be reloaded electronically. An option without fees is highly preferred.  <response>: Why would you do this for gas? I mean: you gotta drive, right? Its not like you can stop paying for gas when its the 24th of the month and you run out of money but you still have to drive to and from work for a few more days. Maybe its better to limit your non-work related miles? Say for example you get 100 non-work related miles per month. You are allowed to stop at a shop when on your way to work or back from work, and it will cost you no miles except when its actually 2 miles detour.... You are allowed to save miles from one month to the other. All you need to do is put a booklet in your car in which you write down the number of non-work-related miles. 