Just kidding.
I did 10x100 yd sprints in a parking lot at 6 am while waiting for my son to get out of class and then headed to San Francisco and drove hills in my car.
The parking lot I ran my sprints in was not flat, as evidenced by the variance in my times. I'm also not sure on the distance - I kind of guessed. My fastest was 16.6 seconds and slowest was my first warm-up sprint @ 20 seconds!
