Any of you full-timers also bring a separate car along?

We have a Ford Focus wife follows when we travel. We've been doing it that way for 7 years. We did leave it in storage when we went to Alaska.
An added bonus is when in heavy traffic I'll put on the blinker she'll make the lane shift and open up a space for me.
We're thinking of getting a replacement for it as repairs will soon outrun its value.