As of May 10, Nio users have accumulated more than 2 billion kilometers, the electric car company announced Monday.

The figure took 846 days to go from 0 to 1 billion kilometers and 229 days to go from 1 billion to 2 billion kilometers, said.

To date, Nio vehicles have traveled to 350 cities in China.

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More than 36,000 users have driven more than 20,000 kilometers, and Nio Pilot has driven 164,068,765 kilometers.

During the May Day holiday from May 1-5, Nio users drove 34.55 million kilometers and 1.07 million hours, reducing carbon emissions by 2,271 tons, the company said last week.

During the May Day holiday, Nio users drove more than 4.7 million kilometers with Nio Pilot, an increase of 278% compared to the same period last year.

During this period, users used Nio Pilot for a total of 62,417 hours, an increase of 269% compared to the same period last year.

One user used Nio Pilot for 98.5 percent of the 797-kilometer trip, which is the highest percentage of all users using the feature.

(Source: Nio)