Broken lugs or missing nut? How far, how fast and what type of road?

Busted studs, I was replacing the old rusty lug nuts and these two snapped on me. I have a 8.5 mile drive to work, top speed on a smooth road is 35-40

X2
Not to good,
I would not go far, 10-15 miles tops or too fast, keep below 40mph

I think I'd risk it in that situation rather than miss a day of work but that's it. Not very safe.
I'd make sure the others were ok before and after I drove it. One more gone or if they're loose when I checked them at work I'd fix it or have it towed before I drove again.

Worst part is they are next to each other. Good luck!

I know, that's what is bugging me. I did every other wheel then on the last wheel.....it's always the last bolt or the last thing that I need to do that kills the "project" haha