From rear-mounted radar to self-parking vehicles, we're blown away by the auto industry's ingenuity. But having sex in the car has been a major challenge since the advent of the Ford Model A, and there's no end to the struggle in sight. Right now, there are engineers working tirelessly to put Wi-Fi in their latest models, but no one at GM cares about giving you enough headspace to comfortably perform an acrobatic sex act in the backseat. It's a shame.

Since the onus is on us to make it work, we're obliged to share years' worth of steamy window advice. So grab the keys to your mom's Volvo and find a dark spot in the Best Buy parking lot, as we inform you on The 10 Best Positions for Having Sex in a Car.

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