A retired teacher polished off several glasses of wine in her car before driving so slowly she built a long queue of motorists behind her.
Lesley Barton veered across the road and drove head-on towards another motorist before swerving out of the way at the last second.
She was followed, stopped and confronted by the concerned driver, who then tried to block her car in and stood in front of her to stop her driving off.
But private tutor Barton - who was clearly drunk - tried to hide a partially-finished bottle of wine in her back seat before driving away from the Good Samaritan.
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