Time to spare? - go by air!
Has anyone ever done a time study of that? I did one for me (obviously everyone's is different) and the fastest I could reasonably be airborne after leaving my house would be around one and a half hours, that's no traffic hold ups on the way to the airfield and no hold ups with prepping the a/c or with ATC.
Assuming I could do 70 road miles in that time I would then have to fly for another twenty minutes or so to catch up with my car, plus say half an hour at the other end for landing, getting to where the car was etc.
I worked out that anywhere less than two and a half hours drive away was quicker by car.