What justice!

A three year old toddler is run down by a van travelling at 35mph, driven by a man distracted by using his mobile telephone. The toddler is brain damaged for life, his parents condemned to a lifetime of caring for him whilst the driver gets a two year suspended prison sentence.
The parents claim this is not justice but what would justice look like?
The toddler has lost his 'normal' life, perhaps even a few years of his expectancy. This is beyond monetary price.
The parents have lost the joy of raising a normal child whilst being condemned to a lifetime of caring and mental anguish. Irreparable.
The driver has the consciousness of guilt which effect will diminish over the years. He will recover his license to drive. No hardship, no justice.
The taxpayer, despite having no involvement, will foot the bill for the childcare for life. If the offender had been jailed, the taxpayer would be obliged to pay another £300 per day for his keep and his benefits on release. No justice for the taxpayer.
So it seems that there is no justice for anybody except that eventually the guilty walk away unscathed. So! what is the answer; kill him? Like Sisyphus, make him work for life, giving all his earnings to the family? make him suffer a debilitating procedure like the loss of a leg, to remind him daily of his crime. Humiliate the driver by making him attend the stocks every weekend for 2 years, say, where he can be shamed in front of the community.
It seems that in this case, Justice is impossible. Only the legal profession, like overflying vultures, will survey the scene of devastation with any hope of extracting value. But justice it aint.