True story: There is a treadmill in the back of my truck right now. (I finally sold the old clothes rack and am delivering it to the buyer this afternoon)

So...

If I'm traveling up I-17 while someone is running the opposite direction on the treadmill in the back of the truck, and I drift it around a corner, what's the square root of the hypotenuse of the right triangle created by me going around a 90 degree turn at a 60 degree angle?