So was mine, but time saved driving didn't justify the amount of maintenance I would have had to do on my car/sanity with 5 min in car + 2 hours on a coach vs 50 minutes fighting interstate traffic + paying for parking.
We should ask some game theorists why the busses are so slow :-)
They achieve the same peak speed as my car, but they make many more stops and take a (for me) non optimal route.