TWO boy racers killed a much loved gran after going at speeds of up to 140 mph.

Joan Price (59) was returning from brass band practice when tragedy struck on January 30 last year.

The smash occurred as banned driver Logan Knox and John Gribben whizzed along the A77 near Ayr.

Jurors heard how one motorist described their behaviour as “absolute madness”.

Knox (20) eventually lost control of his powerful Volkswagen Golf GTI and ploughed head on into Joan’s Nissan Pulsar.

The support worker died instantly while her passenger Gillian Kay was left badly hurt.

Prosecutors claimed Knox and Gribben fled the carnage in the latter’s private-registration Audi A3.

Despite the death, Gribben took part in further high speed driving just two months later described as using “Ayrshire roads as a racetrack”.

The duo’s involvement can now be revealed following the end of Gribben’s trial at the High Court in Glasgow today.

Gribben (19) was found guilty of causing death by dangerous driving.

Knox was jailed for five years and four months last summer after he pled guilty to the same charge.

First offender Gribben will return to the dock later this month.

Chief Inspector Craig Linton, Road Policing, commented: ““I would like to pay tribute to the family of Joan Price for the dignified manner in which they have conducted themselves throughout the trial of John Gribbin, and prior to this when his co-accused Logan Knox was arrested and sentenced for his involvement earlier in 2017.

“This was a dreadful incident caused by the actions of two drivers who demonstrated a blatant and utter disregard for the safety of others on the road whilst travelling at high speeds, and in competition with each other, on the A77 on 30th January 2017.

“Joan was simply returning from band practice with a friend when her car was struck by a Volkswagen Golf driven by Logan Knox, who was racing with John Gribbin on the A77, Ayr, 250 metres north of the Holmston roundabout.

"A collision at excessive speed between the two had caused Knox to cross the carriageway directly into Joan’s path. Knox and Gribbin then both fled the scene in Gribbin’s vehicle making no attempt to assist Joan, her friend or others affected.

“This has been a devastating experience for the family, friends and colleagues of Joan Price who was loved by many. It also stands out as a stark reminder of the consequences of driving dangerously and with a blatant disregard for other innocent, law-abiding people who use the same roads and the impact that this can have.”