That'* almost as old as the Internet, but still just as hilarious. Let me amend:
Windows Vista - One of the flashiest cars in the lot. Comes in a multitude of trims that you can't really tell apart. You can freely drive it for about three miles before the engine shuts down until you supply a valid title and license. Then, it drives rather slowly (except on Microsoft roads) and tries to convert your music to formats that only work on the car stereo. A few cars also randomly explode for no reason, though Microsoft denies this while showing the brochure for the newest model.
Windows 7. Looks and feels just like the Vista car. In fact, the word "Vista" is faintly visible in the paint on the trunk lid below the Windows 7 emblem. It still demands your title and license before it will operate as well. True to the marketing, it runs much faster than the Vista car.
Mac - Once you peel off all of the self-stick plastic wrap, an opening appears on the body. You get in, the belts fasten, the snow leopard-print seats adjust to fit you, and the engine starts by itself. It then figures out what music you like based on your brainwave patterns, begins playing it, and suggests more that you can buy instantly without taking your eyes off the road. However, instead of a steering wheel, gauges, and pedals, there'* only a picture of the road that you can touch with your hands and feet to move the car, find nearby attractions, Google Maps directions, and a square that you can touch to download new apps for the dashboard. Also, the hood is welded shut, but everyone you know says that it won't be a problem, as there are no fluids to change and no tune-ups to perform. The car can even rotate your tires for you while you sleep… although you're not sure how it manages to do that.
Linux - The car is freely available to anyone who wants it. When you order it from the dealership, they look at you funny. Within 20 minutes, several different couriers bring the individual parts to your doorstep, with a 300-page factory service manual detailing how to build the car. After spending several weeks with the manual and a couple of neckbearded acquaintenances who have built their own Linux cars, it gets you to any destination at 100 miles per hour, runs on water, and is quite awesome. However, changing the spark plugs, for some reason, requires you to remove the dash, seats, muffler, left fog light, and repaint a door.
2007 Pontiac G5
1999 Pontiac Grand Prix GT - Stock engine ate transmission.
1997 Pontiac Bonneville SE - Cammed engine ate transmission.