Berlin had an on demand ride sharing shuttle service, called BerlKönig, that has been run by Berlin's public transport provider BVG. Unfortunately it was recent

Berlin had an on demand ride sharing shuttle service, called BerlKönig, that has been run by Berlin's public transport provider BVG. Unfortunately it was recently discontinued, but apparently the BVG is planning a new on demand service. BerlKönig was automatically following routes that would optimize for a higher load factor. For me it was the best option for certain scenarios.