The couple that speeds together, stays together?!
NASCAR superstar Tony Stewart is punching the gas all the way to the alter ... he just got engaged to his drag racer girlfriend Leah Pruett and the diamond ring is MASSIVE!
49-year-old Stewart had just celebrated his 1-year dating anniversary with 32-year-old Pruett ... when he decided to put a ring on it over the weekend.
Pruett was so stoked, she casually showed off the hardware on her IG page ... but yeah, we noticed!
The couple met in 2019 -- but didn't go "official" until 2020 and reportedly spent the majority of the pandemic quarantined together .