In order to seek a job at one of the automotive companies of Germany, Eberhard Schulz built his own car in the garage of his home in 1969 called the Erator GTE.

The car received a facelift in 1991 which added changes in ventilation to improve cooling, some visual changes and changes to the exhaust system to pass stringent safety tests.

It had many advanced and unique features at the time such as two sets of gull-wing doors, and an automatic air brake.

The car had a mid-mounted Mercedes-Benz 6.0L V12 engine generating 408 PS (300 kW; 402 hp) and a 6-speed manual transmission.

Isdera planned a limited production run of the Commendatore 112i like its predecessor and quoted that each car would take six months to complete.

The company was then bought by Swiss investors under whom Schultz completed the car in order to make it driveable on the road.

On the exterior, the updated car had conventional side-view mirrors and had silver five-spoke Mercedes-Benz alloy wheels instead of the gold BBS units.

The design which resembled a touring car from the 1930s, was inspired from the Bugatti Royale and the one-off 1936 Mercedes-Benz 540K Autobahn Kurier.

[9] The co-branded Isdera EX5 Pro was produced in a small batch of only a few hundred cars and sold at the Chinese market.

In 2021, the ISDERA brand was acquired totally by Chinese capital Xinghui Automotive Group with the official Chinese name: 鹰兹, the new ISDERA brand is looking to carry on the legacy of high-level craftsmanship of hand-build sports car as the founder Eberhard Shulz always insisted, only with modern design and technology to enhance the legacy even more.