Why is it that some husbands let their wives drive luxury cars while they drive ordinary cars?

I've been observing some of my neighbors (one of them is a stay at home mom) and the husbands drive ordinary cars like Honda Accord or Honda Pilot. But the wives tend to drive luxury cars like Acura TSX or Acura RDX (some form of luxury car). What is the reason for this? Why do wives get to drive luxury cars while the husband drives ordinary car?
Added (1). I should say some of them.
Added (2). Its not a problem though but was only curious.
Added (3). The neighbors are Asians actually.

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