How long does it take for a new car to break in before it can be driven on the highway?

[McJoy]

A new car can be driven on the highway at any time during the break-in period. Precautions for driving on the highway include: 1. The driver and front-seat passenger should fasten their seat belts, and the driver should not answer phone calls; 2. Avoid sudden steering wheel movements while driving at high speeds; 3. Do not change lanes arbitrarily while driving. When changing lanes or overtaking the vehicle in front, the turn signal must be activated in advance; 4. When overtaking, only the adjacent lane is allowed. After overtaking, the vehicle should immediately return to the driving lane and must not straddle or drive on the lane divider; 5. Do not reverse, drive in the opposite direction, cross the central divider to make a U-turn or turn, conduct test drives, or drive a training vehicle. Overtaking and parking on ramps are prohibited; 6. Maintain a following distance of at least 100 meters. When the speed is below 100 km/h, the distance from the vehicle in front in the same lane can be appropriately reduced, but the minimum distance should not be less than 50 meters.