Viper SmartStart is an iPhone app that allows you to remotely unlock or start your car and, unlike remote keyfobs, the range is virtually limitless.

The catch is that the system that bolts into your car to enable all this costs $499, then there's a $30 a year subscription fee after the first year. Personally, we've never had a problem inserting a key into a lock and twisting it or waiting until we were in the car to start it, but convenience junkies now have one more way to shave precious seconds off their daily routine. [via Automoblog]