Elon Musk and German Economy Minister Peter Altmaier consider vaccine company CureVac as one the world's most innovative firms, a source said on Thursday, after Musk and Altmaier met on Wednesday.Musk, who is CEO of Tesla, during the meeting also discussed Tesla's investments in Germany as well as space technology and autonomous driving, the source familiar with the discussions told Reuters.Tesla is helping to build mobile molecule printers to make the potential COVID-19 vaccine under development by CureVac.Tesla Inc's CEO Elon Musk met with three German ministers and other senior politicians on Wednesday to discuss the progress of a collaboration between the car maker and a German biotech company and a planned electric vehicle.