Most people I know stop 15 minutes every two hours and maybe stop for a meal every 4 hours. An hour every two hours is too much. It extends the travel time by 50%.
EDIT, because HN sucks...
70 MPH * 3 hours = 210 miles. You might want to talk to some normal humans who don't frequent superchargers.
The usual drill is to drive around 120 miles and then stop for 10-15 minutes to supercharge. So yes, that is a bit more stopping that I used to do.
Tesla has a trip planner at tesla.com/supercharger
For Palo Alto to SpaceX's factory, it recommends stopping for 50 minutes in Kettleman, which means you're charging for 13% of the trip time.
{Sorry about the comment about 3 hours to go 200 miles, I misread what you said as taking what Shivyeta said about stopping for an hour to charge at face value. Oh, and why do you think that insulting me is an appropriate response?}
Yeah, that was probably snarkier than necessary. But we increasingly live in our own little bubbles, and "folks hanging around the supercharger" is definitely a small one.