Groninger Motorrijtuigenfabriek was a Dutch automobile manufacturer based in Groningen, active from 1898 to 1899. The company claimed to have produced the first true Dutch car, asserting that their vehicles were distinct from those of Eysink, which had utilized a foreign engine. Groninger's cars were equipped with their own-designed water-cooled engines, offering outputs of 2.5 horsepower and 4 horsepower. At the Amsterdam automobile show,…