Northern California is a traveller's paradise and truly has it all. It's the perfect road trip destination because it has such a diversity of things to see, do, eat and sip.
You'll be making concessions and be forced to cut things out because you'll be balancing the time required to drive to get around and also what makes sense to fit in.
The tour you want to look at is California Dreamin': Northern California By Design and this is one of their newest tours that incorporates what's called Choice Touring.