I mean, seriously. They might hurt their ankles or something doing this, but you are WAY more likely to be in a car accident. Just let them have fun.
That's a ridiculous comparison. You want players to walk from New York to Seattle for a game so they don't get into a car accident? People need cars, planes to get from a to b. It's not a hobby. To drive around on these little shits inside the facility because you're too damn lazy to move your ass is a completely different thing.