A man who was carjacked Tuesday afternoon tried to thwart the theft by hopping on his vehicle, but his robbers were not dissuaded.

According to the San Francisco Police Department, the crime went down at 4:07 p.m. Tuesday, at a gas station on the 300 block of Bayshore Boulevard, which is near Oakdale Avenue. (If you're looking for a convenient landmark, the Silver Crest Doughnut Shop is on that block.)

Police say that the victim, a 25-year-old man driving an SUV, "was filling his vehicle with gas." When he entered the gas station to pay, to men believed to be in their 30s "jumped in his vehicle and drove away."

Unwilling to let his SUV go without a fight, the victim chased the fleeing men "and climbed on the vehicle."

That's when, police say, one of the suspects "pulled out a handgun and forced [the victim] off the vehicle."

Police confirm that the suspects made off with the man's SUV, and remain at large as of Wednesday morning.The victim suffered non-life-threatening injuries in the fray, and was transported to an area hospital for treatment.