He drove up behind them "aggressively" before screeching to a stop, prompting the startled family to dismount.
While the father of the group ushered the others to the far left, Kelly drove over the wheel of one of the bikes and "brushed past" a young boy.
As he drove past the family someone in the car yelled: "F*** Covid".
Kelly continued to a Corstorphine address, where he drank alcohol with friends before hitting the road again.
He was speeding with three male passengers and a 5-year-old boy in the car, when he approached a right-hand bend in Eglinton Rd.
The court heard how Kelly cut the corner and slammed into a Toyota heading in the other way.
The female driver and her 10-year-old daughter remained in the car and called out to the defendant.
"I can't help you," Kelly said, as he walked away.
The woman was admitted to hospital with severe bruising, an injured foot and back pain, and was discharged after 12 hours.
Her daughter was allowed to go home the same evening after a period of observation.
Judge Robinson said the pair had struggled with the physical and psychological effects of the crash.
When police found Kelly at his home an hour later he gave a breath-alcohol reading of 472mcg — almost twice the legal limit.
He explained his nephew — who fractured ribs in the crash — had been depressed and they had been on "a joyride to cheer him up".
Counsel Alan de Jager said the major factor had been that his client was not wearing his glasses at the time.
A report detailed the man's traumatic childhood but the judge said that did not explain the errant driving.
Judge Robinson allowed the defendant the chance to convert the sentence to home detention should an address become available.
He ordered reparation of $2000 and made a protection order in favour of Kelly's former partner.
