I actually factor commute time and gas against my paycheck when job hunting to get a more realistic image of my take home.
Say I'm getting paid 10/hr for full time, 5 days a week at a job that's 10 miles from home, and my car gets 20mpg in city.
40hrs*$10=400
(20mpg/10miles2way trip) 5days = 5 gallons of gas a week.
Gas here is is about $3.80*5days= is $19 that comes out of the 400 we make each week so we actually get $381
But factoring commute, that's 40hrs + 10min a day travel time = 41hrs, 40min.
381/41.667=$9.14/hr
That's not even considering commute traffic, vehicle maintenance, fluctuating gas prices, out just basic ass income tax. At the end of the day, this job is only paying about $7.15/hr which is less than I'd make walking to a minimum wage job within 5min.
Coincidentally, this is why it's so hard for rural communities to get out of poverty, at point I was doing 1hr, 43min in commute to a job that paid 10.30/hr 5 days a week. I was barely scraping by and to take any other job was going to net me negative money.