I was recently in the market for a new car so naturally I sifted through Consumer Reports and read up on safety ratings, performance reviews, and gas mileage. In all my research, however, there was one key factor missing: How comfortable is it to have sex in? Even though couples have been having sex in cars for decades -- I'm pretty sure I was conceived in one -- I doubt it's an appropriate question to ask during the test drive. But I really think that it could be a good selling point. Heated seats? Check. Tinted windows? Check. Economical? Having sex in a car is much cheaper than renting a hotel room. Double check (if you're lucky). More importantly, it's spontaneous and the idea of getting caught by a stranger (so long as it's not the police) is pretty hot. Like the perfect partner, the perfect car for steamy-windowed seduction would be a combination of form and function. Let's discuss:

10. Volkswagen Type 2 (aka "Hippie Van")

With plenty of space to change positions and curtains to ensure privacy, this car was built with naughty adventures in mind. Light a jay, throw on some psychedelic rock, and head to some sort of outdoor festivity. This is the perfect car to lure uninhibited hippie chicks -- and bonus -- there's plenty of room for a threesome.

9. Dodge Ram 2500

For the more voyeuristic lovers, a pickup truck with an extended bed is a great option. Lay an air mattress or sleeping bag in the back and have sex under the stars. Just be careful how much noise you make because there is no rooftop or windows to muffle the sound.

8. DeLorean

Made of stainless steel, this is the perfect car for wild, rough sex, especially with an older woman who will appreciate the car's history -- only 9,000 cars were produced. Plus, if you come too quickly you can go back in time and try again.

7. Jeep Wrangler

Nothing screams tie me up and shag me senseless like a Jeep Wrangler. Drive to some remote locale, take off your necktie or belt, and tie your partner up to one of the many exposed rooftop bars. Swing around a little, indulge in some light S&M, just be careful not to tumble out since there are no doors and all.

6. Dune Buggy

Location, location, location. The biggest perk of having sex in a car is that you can have it anywhere. While standard cars limit you to a lookout point or parking lot, a dune buggy lets allows you beachfront access. Finally there's a way to enjoy sex on the beach without getting sand... everywhere.

5. Cadillac Escalade

With plenty of room in this massive SUV, there's no need to contort your body into weird positions. While that's still a fun option, the ample headroom and cushy seats of the Escalade make any position a possibility, even doggie style. Bonus points if you can make the rims spin while parked.

4. Mini Cooper Convertible

Size doesn't always matter: Sometimes good things come in very small packages. Though utilizing the backseat may test your flexibility, the retractable roof guarantees plenty of headroom, which allows her to bounce up and down while she rides you.

3. Ferrari

If you have the opportunity to drive the ultimate sports car, how can you not have sex in it? If not for sheer bragging purposes alone? Just make sure she swallows -- you don't want to mess up the interior.

2. Lowrider (with hydraulic suspension)

Be sure to use the parking break because you'll want to leave the engine on while having sex in this automobile. Hydraulic suspension systems allow riders to dip and raise their car by flipping a switch. Crazy sex without any effort? Enough said.

1. 1965 Shelby Mustang

This classic muscle car is just sexy overall. With curves in all the right places, this car begs for some on-the-hood action. Have her face the car and place her hands on the hood, while you hold her legs parallel to the ground. This wheelbarrow style position allows you to penetrate her from behind while showcasing your manly strength.