You are likely retired or have a job where you can take off lots of time. I don't have the luxury of taking that amount of time off. And if it is more than 4 hours drive away I am very likely to fly rather than drive.
Wayner - Not quite clear on - if you can't get a week off, or a period of 4 weeks straight? I used to Drive to & From Cleveland (officially a 5 hour Drive) regularly - not so much of a challenge, time wise!
If I had stayed on my first job - started 6 weeks out of High School, I would have 5 weeks Vacation, or maybe 6, but leaving that, going to school, and since moving to Ontario, I have been through a few employer changes, and have been required to rebuild my Vacation time all over again. The Latest trip - I had to request a leave of Absence (unpaid) to take advantage of some vacation offers that - if not taken, I would have simply Lost!
A Few years back - we rented a car (since mine was not in great shape for a big trip far from home) and drove to Oshkosh for Air Venture, and after a week - drove to West Texas, for a couple days to check out some Property, and then - we drove (Actually - I did all the Driving) back from Presidio, TX, to Toronto!
I have Driven from BC to Thunder Bay, ON, years ago - with my mom as co-driver, and back - via Duluth, and North Dakota, back to Winnipeg, and back to BC across Canada, and then - back to work in Prince Rupert - ion one week! From Vancouver to Tucson, Arizona, etc., but I have also flown some trips, too. Both Personally - as the Pilot, and as a Airline Passenger! It all depends on what the purpose of the trip is, and what points of interest along the way might be part of the plan!