Nick Kyrgios' Tesla was stolen in Australia after an assailant pulled a gun on his mom, demanding the keys, according to police ... but thanks to the tennis star's quick thinking, cops got his car back and arrested the alleged thief, who's now behind bars.
According to theAustralian Broadcasting Corporation, the incident went down around 8:30 AM on Monday when a 32-year-old man from the Canberra area pointed a "long-barrelled gun" at Nick's mother, Norlaila Kyrgios, and demanded the keys to Nick's bright green Tesla.