My general sense of it is that my commute to a practice must not be as long as the time spent in practice, itself. That's kinda my threshold. In your case, that would be 3 hours practice, minimum, in addition to 3 hours of commute for 6 hours an evening, times two, per week, apart from any gigs that would occur.
I wouldn't want to do that. And never have. But to each their own...
Plus, I would have been looking at that drive in traffic after a demanding 8 hours of my regular job. I may have missed a good opportunity, there will be others and it will take time.