The Porscheplatz sculpture comprises six supporting legs made out of lightweight steel. Each gradually gets wider towards the sculpture's highest point where three iconic generations of the Porsche 911 model are fixed.
The cars were each fitted with an inner steel beam, enabling a secure connection to the 25-metre-high monocoque shell, while also acting to distribute weight more evenly.
"This design is a variation of the one I made for Goodwood Festival of Speed 2013, which Porsche were very keen on," Judah told Dezeen.
Unlike the sculpture unveiled two years ago, which was designed to be viewed from its front and rear, Judah's latest structure is located on a roundabout, meaning passersby can see it from all angles.
"I responded to this challenge by having each element shooting through each other," said Judah. "It allows viewers to enjoy the cars wherever they stand."
The 80-tonne prefabricated structure is made up of eight parts that were built in England and shipped to Germany for assembly on site.
Each leg slims at the base, becoming narrow enough for a person to wrap their hands around.
"The challenge of bringing together a sense of dynamics, height and danger inspired the design," said Judah. "I hope people will be excited by it."
Other giant sculptures designed by the artist include an arching steel structure featuring two Mercedes Benz racing cars positioned to look like they are hurtling past each other, a white knotted sculpture of a race track and a 28-metre-high installation of the Jaguar E-Type car.
Photography is by David Barbour.
Design: Gerry Judah
Engineering: Capita CAPITA
Logistics: Fichtner Bauconsulting
Fabrication and installation: Littlehampton welding