A hotel valet has become a bit excited at the wheels of a Porsche and come a cropper outside a hotel.

He drove it UNDER a Subaru SUV outside the Hyatt Regency in Sydney's CBD.

And to make it worse, the Porsche was a soft top.

Bad news is that the Porsche is or was a soft top. (9news)

Oops! A valet parker in Sydney has a disaster outside the Hyatt Regency. (9news)

What was he thinking? (9news)

Helen Thom, a witness, said: "Whether it’s he misjudged or didn’t actually know how to drive the vehicle, he accelerated quite quickly and then ended up going underneath the vehicle and the car ended up on top of his vehicle.

"The Porsche owner was not very impressed and saw the whole thing. Let’s just say it wasn’t very nice. He wasn’t happy at all.

"It almost looked like it was a stunt. It was definitely an eye-opener.

Witness Helen Thom said the accident looked like it was a stunt - but the owner was not happy. Picture: 9News (9news)

"The driver was uninjured but I think very shocked and extremely embarrassed because there were a lot of people watching. It was extremely public and a huge mistake, and no doubt a very costly one."

The valet has apparently apologised.