Proper running form includes hunching all the way over and pumping your arms vigorously. For best results, run directly to your local chiropractor.
Are you having trouble fitting in a workout during your lunch break? Just go out in your shirt and tie. No sweat! Or, rather, lots of sweat. In unfortunate places. For the rest of the afternoon.
Cars don't exist. Feel free to run on the center line for as long as you'd like.
Or, maybe you will. (Seriously, dude. Stop it.)