Na, NW, just go at a slower pace and you can recover more easily. Keep the big mover, and just plan on at least 2 or maybe even 3 days between driving days.
My two British buddies just drove a small campervan from California to SC and took 3 months to do it! I think our American tendency is to see how much ground we can cover, and how fast, and it really changes your perspective a lot to purposefully go a lot slower.
I say this after covering 6,000+ miles in our bus in just 5 weeks earlier this summer, so clearly I've got some work to do in this department. But, I just returned from spending 10 days on the road with the girls, driving from Miami to Charleston, which is a trip I can normally make in around 10 hours.
Sengsational, I try, surely I do. Though my mantra at Disney was "this is better than work, this is better than work, this is better than work" which was most effective!