We really are living in the future when your car just magically knows you're there without you having to do anything. The jingling of keys used to be the universal symptom of turning a car on, but ...

It happens to the best of us. You realize that your car keyfob battery is low, but you figure you have plenty of time left before it dies, and usually you do. But inevitably, it will run out of power ...

How do you start your car? Is it a push button with a proximity key, a standard key that you turn, or that weird thing BMW did for a while where you have to put the fob in the dash before the button ...