2 children, just born, underweight. So really, let's just disturb them twice a day so Dad can take Mom to work and home again. Oh, and this is 2008/2009 when lots of people were truly happy to have any job, especially after one of their two incomes just disappeared unexpectedly (layoff, not firing). Mom can't take the car to work herself because Dad might need it for errands or medical issues with the kids. They owned the Mercedes (and no debt was mentioned for the unreliable Honda). Why sell assets that are paying for themselves in terms of actual money (getting her to work), and relieving emotional/financial stress (confidence that they aren't totally fucked if one car fails).