one of EM's marketing point has emphasized the reduction in cost of commuting to work and back home .... that point is well reinforced by the info in this link where a good bit more detail is provided
"Fuel is the most common commuter cost.

Take your annual take-home pay and subtract $2,600 from it — that’s how much you’re really making, after you factor in how much it costs you to get to and from your job all year. The average American travels 45 minutes commuting to and from work and spends about $10 to do so every day, according to the Citi ThankYou Premier Commuter Index."
"Fuel is the most common commuter cost.
Take your annual take-home pay and subtract $2,600 from it — that’s how much you’re really making, after you factor in how much it costs you to get to and from your job all year. The average American travels 45 minutes commuting to and from work and spends about $10 to do so every day, according to the Citi ThankYou Premier Commuter Index."