Figure that the people with the $50k cars are making at least $70k -- not unreasonable at all for developers or successful freelancers.
I can't believe someone who was making $70k (~45k after taxes/social-security) would trade in more than a year of 8 hour days 5 days a week in some shithole development job just to be able to commute in style (though perhaps he just wants to engage in parking-lot dick waving for some girl at the office; fine, I can believe it).