Do you know this ten second rule?

With today’s engine technology, it makes sense to turn off your car engine when your car is standing idle for 10 seconds. Why? because it only takes about a thimble full of gas to start an engine with fuel injection technology, which is used in nearly every car built since about 1990. And while more frequent use of the ignition might cause some wear-and-tear, the gas you'll save far outweighs the maintenance cost. It may seem excessive to turn your car off at every stoplight. In some states, shutting off your engine while in street traffic is frowned upon. But there's little debate that it's a good idea to turn off the motor when waiting ...