There's no question that the Tesla requires longer than an ICE. But there are lots of factors that add to the ICE minimum possible drive time; bladder, pets, spouse, and kids. The difference becomes less as more and longer ICE stops are required.
I've done several trips where I kept records of time in and time out of superchargers.
Most Superchargers Visited
That is a post on one 7323 mile trip. Ignoring overnight and tourist and family stops, other than 2-3 unplanned bio-breaks, the car was either in motion or sucking electrons at a supercharger. I spent 108 hours driving and 31.5 hours charging. The average charging time was 36 minutes at 53 superchargers.
In late March I drove from Whistler ski resort in British Columbia home (in the Sierra foothills between Sacramento and Lake Tahoe). The distance was 982 miles and took a total of 19hr 40min. Of that
15:58 was driving (includes 20 minutes at the border crossing) and
3:42 was charging at 7 superchargers I hadn't planned to do it in one shot, but I was up early. The forced stops to charge (along with autopilot) made things much less tiring than driving long trips in my ICE. I haven't driven nearly 1000 miles in an ICE in one shot in 30 years.
If you're in a hurry, take the ICE. If there are no SC's along your route, take the ICE unless you can tolerate slower L2 charging.
Someone posted something about time being money. Not always true. I don't work any more and have lots of time!
There have certainly been times I've been sitting in the waiting for it to charge so I can get going. I once misjudged winds and thought I had enough charge to get from St George to Primm without stopping in Las Vegas. I was peeved when it became clear I had to stop there - it's a crappy neighborhood and takes a while to get to/from the freeway. I was there less than 10 minutes. I didn't quite learn my lesson as last month I misjudged winds again headed into San Diego on I8 and had to drive 55 for an hour. There is no question an ICE had more available fueling options.