I used to drive a Mondeo for work when I was doing lots of miles, sometimes a a 1000 per week, and kept the 964 for weekends but gradually the 964 got used less and less and in the end it had done 600 miles in one year and then I sold it.

I didn't see the point of it sitting in the garage for months on end and paying 2 lots of insurance/road tax/servicing etc etc for a car stood around most of the time....better uses for the cash.