The incident took place around 9:15 PM last night when the victim, identitied as Vipin Rajput was returning home from his office in West Patel Nagar Block-24 in his Hyundai Verna car with an associate.
"As he drove toward his home Block-37 in the same area, his car brushed a man walking on the road along with two other men. Soon after the incident, the trio hurled abuses on Rajput," said a police official.
The trio then fled the spot while Rajput was rushed to BLK hospital. Police got a PCR call about the incident from the victim's wife.
Local police has recovered an empty cartridge from the spot. Police has also recovered the CCTV footage of the area in which the attack was recorded to identify the attackers.
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Rajput's condition is said to be critical and he was not fit for statement.
There has been a spate of cases of road rage incidents in the national capital in the recent past. On Sunday, a 22-year-old man was shot at by his neighbour following a heated exchange over parking of motorcycle on road in their colony in outer Delhi's Narela area here.
Last month, a Manipuri youth was also killed by five men in south Delhi's Kotla Mubarakpur area in a case of road rage.