I think in 99% of the cases you are mistaken "can" with "want". That aside, whatever way you pick isn't going to be fair to one of the two groups...at least my

I think in 99% of the cases you are mistaken "can" with "want". That aside, whatever way you pick isn't going to be fair to one of the two groups...at least my way 1 group gets an advantage out of it (and the other group doesn't, out of choice (the vaste majority of the time)). If an employee was to get rid of his/her car, would you reduce his/her salary by $~1200/month because it isn't fair that he/she nets more money than the people who can't live without 2 cars?