How many pound-feet of torque do I need for spark plugs?

In the past year, I’ve really wanted to buy an electric vehicle. However, most of them are prohibitively expensive, so I’m opting for a plug-in hybrid. A used Chevrolet Volt seems like a great buy, but I want to make sure it’s covered under warranty. What’s the warranty on the Chevrolet Volt?

My neighbors keep parking in my driveway. It's really annoying, especially since I cut hair at my house and that's where my clients usually park. I've asked them to park somewhere else, but I keep waking up to their cars in my driveway. Is there any way that I can remove them?

The speakers in my Ford are pretty pathetic. They barely get above a conversational volume. How can I make my car speakers louder without an amp?