[Closed] Help me critique wife logic (which car, our car content)

I'd like to by a new car. Currently we have two, both paid for as follows:

A) Kuga 2.0 TDI spent all it's life doing city miles with occasional motorway ferrying the family about -hers

B) BMW 330i saloon '52 used for work and everything around the country - mine

So instead of me buying a new car to replace the ageing Beemer she's decided we should swap. The Kuga would make a great bike car with haldex 4wd for muddy event car parks, bike goes in the back with wheels on, we have Thule racks and bike carriers. She's happy ferrying the Beemer about town despite the 21mpg it'd do, and my paranoia that with RWD and it's "lowness" is not as safe for the kids.

I do t get this explanation of an obvious first work problem.

So... ?