Whether you bought a new car yesterday or you’re riding along in a decades-old junker, your vehicle of choice may not have all the modern capabilities you desire. A few key upgrades can fix that, providing you with everything from a killer Bluetooth audio system to a smoother, more enjoyable ride.

Dear Lifehacker,
I love my car, but it's getting on in years. It's paid off, which is great, but even routine maintenance now runs me a few hundred bucks, and the mechanic is always upselling me on additional repairs that are hundreds more dollars. Is it time to just retire my ride and buy a new car, or should I stick…

Selling used cars is a pretty good business: you buy crappy old cars at rock-bottom prices from desperate people; sell these crappy cars to desperate people at inflated prices; repo the cars when the desperate people run out of money; and then sell the same cars all over again.

With winter out of the way for half the world e you might be considering getting all that winter gunk cleaned out of and off you car. You could take it into a special shop and spend a bunch on a deep clean and detail, or you could just follow Popular Mechanics simple guide to do it for yourself.

Dear Lifehacker,
My old jalopy is about to die on me yet again, so it's time for a new car. I'm wondering if I'd be better off leasing my next car instead of buying it. Which is the better deal, leasing or buying with an auto loan?

You might ask why someone would want to turn a perfectly good Toyota Prius into a roller coaster that moves at a mere 15mph. I ask why not?

On tonight's Late Show, Bill O'Reilly spent the majority of the hour chatting with David Letterman about a range of topics. The most entertaining bit? O'Reilly and Letterman—who owns one!—yelling about how much electric cars suck. Watch inside.

All due respect to the Chevy Volt and Tesla Roadster, but the 1920s-inspired Takayanagi Miluira Retro EV just became my electric car of choice. Good thing it's a one-seater, so I don't have to share.

GM's OnStar system has just taken a leap into connectivity, adding audio Facebook updates, voice texting, and apps that control your car from your phone. Suddenly, your most expensive gadget might be your car.

Have you ever wondered what it'd look like if you were driving down the freeway and, suddenly, a car zoomed by you at 100 MPH before crashing in the most horrific way possible? Find out by watching the video inside.