People watch a drive-in concert from their vehicles in Bonn, Germany, on June 13, 2020. The drive-in concert was held here on Saturday with strict measures for people to enjoy the music while maintaining social distancing. (Photo by Tang Ying/Xinhua)

People watch a drive-in concert from their vehicles in Bonn, Germany, on June 13, 2020. The drive-in concert was held here on Saturday with strict measures for people to enjoy the music while maintaining social distancing. (Photo by Tang Ying/Xinhua)

People watch a drive-in concert from their vehicles in Bonn, Germany, on June 13, 2020. The drive-in concert was held here on Saturday with strict measures for people to enjoy the music while maintaining social distancing. (Photo by Tang Ying/Xinhua)

People watch a drive-in concert from their vehicles in Bonn, Germany, on June 13, 2020. The drive-in concert was held here on Saturday with strict measures for people to enjoy the music while maintaining social distancing. (Photo by Tang Ying/Xinhua)

People watch a drive-in concert from their vehicles in Bonn, Germany, on June 13, 2020. The drive-in concert was held here on Saturday with strict measures for people to enjoy the music while maintaining social distancing. (Photo by Tang Ying/Xinhua)