Arizona State University is developing a jet pack that can help propel impetuous Flash-wannabes as they run, presumably from girls because you’d have to lack all common sense to strap a rocket to your back. The project is being funded by DARPA and is coined 4MM because the ultimate goal is to propel a running soldier as fast as a 4-minute mile.The jet pack itself weighs eleven pounds and is still in development but has already shaved nearly 20 seconds off a runner’s one-mile pace.