Two of the children in Bankhardt’s car and a man driving another vehicle were badly hurt.
Bankhardt was cleared of three counts of attempted murder, but found guilty of three counts of causing serious injury by dangerous driving and one count of dangerous driving.
Bankhardt fell to his knees, seemingly in relief, as the verdicts of not guilty on the attempted murder charges were read out.
The trial had heard how, on the night of the crash, Bankhardt repeatedly drove up and down the A146, reaching a roundabout before coming back the other way and driving into oncoming traffic.
The jury was told how, earlier that day, he had become embroiled in an argument with a witness, who cannot be named for legal reasons.
While he was driving, the court heard, he had made frequent phone calls and sent messages.
The police were alerted after people who knew Bankhardt became increasingly concerned about the conversations they had had with him and a post he had made on Instagram.
In a voice note he had sent to a witness, he had said he “hoped God does not treat me badly” and “see you in the next life”.
Bankhardt told a police officer he would be “coming home”, but shortly after 20:30 BST he collided with oncoming traffic.
The court heard Bankhardt turned his headlights on to full beam and accelerated to 74mph (119km/h) in a 60mph (97km/h) zome before the crash.
Bankhardt maintained his innocence throughout the trial, stating he had perhaps become “distracted” moments before the crash while on a video call.
He also denied making threats to kill himself and intentionally ensuring his passengers were not wearing seatbelts.
When asked by his barrister Simon Spence KC if he had intended to kill himself or his passengers, he had responded: “No, never, of course not.”
He is expected to be sentenced on Thursday.
