A drunk mother flipped her car at a roundabout while her 19-month-old son was in the back seat.
Tania Chikwature, 32, was three times over the limit when she crashed her grey Nissan Qashqai on the A606 outside Peterborough on December 12.
Her son survived the accident and was found hanging upside down in his car seat.
He was pulled from the vehicle by witnesses and she was later cut out by firefighters.
A bottle of vodka was discovered in her car.
The dashcam video, which showed her illegally crossing double white centre lines, was filmed by an HGV driver who rushed to help.
He said: ‘At no point did she ask after the welfare of the child or refer to him.’
‘In the 32 years I have been driving this is one of the most dangerous pieces of driving I have ever witnessed.’
Chikwature refused to provide a breath sample at the scene and police only discovered she was three times over the limit when they took a blood test five hours later.
She produced an alcohol reading of 156mgs – the legal limit is 80.
She admitted dangerous driving and driving while under the influence of alcohol.
Magistrates in Peterborough jailed Chikwature, from Butterfly Walk, Henley Green, for 26 weeks and ordered her to pay a victim surcharge of £115.
She also receive a three-year driving ban. Chikwature’s injuries were not revealed.