People visit the Dallas International Motorcycle Show in Dallas, Texas, the United States, Jan. 4, 2020. The three-day event kicked off on Friday. (Photos: Xinhua)

People experience Harley-Davidson electric motorcycles at the Dallas International Motorcycle Show in Dallas, Texas, the United States, Jan. 4, 2020. The three-day event kicked off on Friday.

A child poses for photos with a motorcycle at the Dallas International Motorcycle Show in Dallas, Texas, the United States, Jan. 4, 2020. The three-day event kicked off on Friday.

People visit the Dallas International Motorcycle Show in Dallas, Texas, the United States, Jan. 4, 2020. The three-day event kicked off on Friday.

People visit the Dallas International Motorcycle Show in Dallas, Texas, the United States, Jan. 4, 2020. The three-day event kicked off on Friday.

People visit the Dallas International Motorcycle Show in Dallas, Texas, the United States, Jan. 4, 2020. The three-day event kicked off on Friday.

People visit the Dallas International Motorcycle Show in Dallas, Texas, the United States, Jan. 4, 2020. The three-day event kicked off on Friday.

People visit the Dallas International Motorcycle Show in Dallas, Texas, the United States, Jan. 4, 2020. The three-day event kicked off on Friday.

People visit the Dallas International Motorcycle Show in Dallas, Texas, the United States, Jan. 4, 2020. The three-day event kicked off on Friday.