One police officer had to give up a chase because his Tesla electric patrol car was running low on battery.
Officer Jesse Hartman was stalking a suspect in San Francisco on Friday when he called the dispatcher team to say he only had six kilometers of power, NBC News reported.
Mr. Hartman's shift began at 2 pm and the search began at 11 pm.
Fremont Police Department spokeswoman Geneva Bosques said the police were chasing a suspect wanted for a crime in Santa Clara, California.
The policeman asked the driver to stop, but he didn't stop before taking off at high speed.
Bosques said other police units were following behind and eventually took over the chase with the help of the California Highway Patrol (CHP).
She added that the chase was canceled after 10 minutes when it was considered unsafe because of the way the suspect was driving.
CHP patrol officers found the car abandoned in San Jose, California.
A warrant has been issued for the driver who has not yet been located.
Bosques said it is unclear why Hartman's Tesla Model S 85 didn't have a full battery when it started work.
She added that when one of the vehicles is fully charged, there is usually about 40% to 50% energy remaining after a shift ends.
Bosques said the cars run out of power while on patrol "from time to time," and added: "Especially if a police officer returns to the police station to report and never returns to the street.
"The officer was monitoring the prosecution and responsibly notifying everyone of its status during the approximately 10-mile chase.
"We had other units behind Tesla seeking to take control and the CHP was also responding.
"Highway chases are usually of very short duration, as we deliver them to the CHP as soon as they arrive."
Fremont police said six months ago in a pilot program that tests Tesla's integration with the department.
The force added that it is tracking all relevant data.
Bosques said, "We don't have a written gas or billing policy, but the general guideline is that it should be half full at the beginning of the shift, as was the car."
She added: "This is the second search in which Tesla performed well.
"This example in no way changes our feelings about vehicle performance for patrol purposes.
"So far, the car is meeting or exceeding our expectations. We are still in the first six months of the pilot program and we are following all the data."