This was the moment a woman with the best intentions chased after a driverless Tesla in a restaurant parking lot after it was summoned by its owner.

The onboard dashcam footage filmed in Pennsylvania on February 21 shows the incident where the car starts moving from a stationary position and past other parked cars.

The woman was in her own car at the time and dashed across the parking lot only for owner Timothy Schwarz to stop the car and later explain the situation.

Schwarz told Newsflare: "I was just leaving a restaurant in West Chester, Pennsylvania, and was summoning my Tesla Model 3.

"A woman saw my Tesla moving without someone in the vehicle, she had thought that my vehicle was rolling away.

"She ran to catch the car and started pressing on the front left pillar to stop it.

"As soon as I saw what was occurring, I stopped the Tesla.

"Obviously the lady was very embarrassed, but I thought it was so nice of her to go well out of her way to prevent what she thought was a disaster, but also very funny."

I was just leaving a restaurant in West Chester, PA and was summoning my Tesla Model 3. A Woman saw my Tesla moving without someone in the vehicle, she had thought that my vehicle was rolling away. She ran to catch the car and started pressing on the front left pillar to stop it. As soon as I saw what was occurring, I stopped the Tesla. Obviously the lady was very embarrassed. But I thought it was so nice of her to go well out of her way to prevent what she thought was a disaster, but also very funny.