Long awaited Tesla autopilot cars are finally hitting the market, announced the company in its blog post on Wednesday.

Tesla autopilot cars that are similar to other semi-autonomous cars like Audi, Mercedes and Volvo are capable of keeping the car within the lane as well as maintaining certain distance from vehicles moving in front of the car, according to Guardian.

Tesla's autopilot system can not only function in highways but also on city street roads. The Tesla autopilot cars are capable of finding parking lots and parallel-parking on their own. The cameras and sensors equipped in the cars also warn the drivers on potential impacts on the sides of the cars.

"We tell drivers to keep their hands on the wheel just in case, to exercise caution in the beginning," Elon Musk said today at a press event. "Over time, long term, you won't have to keep your hands on the wheel-we explicitly describe this as beta," he added. "Regulators need to see clear evidence that the reliability is there. It works almost to the point where you can take your hands off."

"But we won't say that. Almost," he joked, reported Wired.

However, Tesla autopilot's lane-changing feature is extremely new and of course not implemented by any of the car companies by far. The Tesla's chief executive Musk said that the system would constantly improve itself by collecting data from the driver. The autopilot system is said to be designed in a way capable of notifying how fast the vehicle can navigate a particular bend and also about the stop signs on the road.

"This is the game we're going to be playing, round and round, for the next five to 10 years until there's fully autonomous driving," said Karl Brauer, a senior analyst with Kelley Blue Book about Tesla's system. "Each time there's a step by someone out there, everyone will have to match it," he added.