Should be more than sufficient to hop supercharger to supercharger, which are rarely ever more than 100 miles apart (small gaps in rural Wyoming, Montana, Nevada, and Texas panhandle aside, which should be getting stations soon).
Yes, my car is rated for 310 miles, in reality it gets close to that at 60-65mph, and is closer to 260mi at 80mph.
But on a road trip I am usually charging from 5-8% up to 50-60% and then moving on. This uses the fastest part of the battery charging curve, takes about 15 minutes, and gives enough charge for 2 hours of driving at interstate speeds before the next stop.
https://supercharge.info/map