<human>: Can you succinctly summarize the text in 1-3 sentences?

Hey guys something really fast, I dont really know which is the right subreddit for this question but I guess you can help me since its somewhat related (I think) haha

I was promised by my direct boss when I was signing contract that I would be receiving gas support since I am required to use my car (not that much, but still enough to make a difference by the end of the month) 2-3 days a week.

How can I remind or ask my boss for this without it turning awkward?? He and me seem to get along "well" but not wonderful, and I've been in this job for a week. 

Thanks for the help!
<bot>: was promised gas money but no signs of it yet, how do I bring it up without being an ass about it?