As part of the 2015 "Allgäu Classics" classic car rally, the world's largest soapbox was built for a charity event in aid of the "Kartei der Not" charity, earning it an entry in the Guinness Book of Records: 8.40 m x 4.20 m
Titus Bernhard took part with his Jaguar E-Type and starting number 16 and donated €1,000
Link to the charity event