Three people cut free from car after high-speed Melbourne smash

Three people had to be cut free from their car and another driver fled the scene after a high-speed crash in Melbourne’s north overnight.

A group of three people were travelling in a car through Campbellfield when they were hit by another vehicle.

The driver of the second vehicle ran from the scene, leaving the three others trapped in their car.

The trapped driver and two passengers began honking the horn to raise the alarm.  

Passing motorist Bilal Mohtadi came to the their aid.

“The passengers were stuck, they were holding down the horn so I pulled over, no one else was pulling over so I thought I’d give it a look,” Mr Mohtadi told 9NEWS.

All three passengers were taken to hospital after being freed from the wreckage. One is in serious condition.

Police are still searching for the driver of other vehicle. 

It is believed the two cars may have been racing at the time of the crash.