I'm picturing the next scene in which said tinkerer brushes his forearm against the still-hot exhaust and recoils in pain, flinging his arm outward and simultaneously dislodging the main jackstand...

...and his head forcefully injected into the cockpit through the passenger floorboard (ala Dino in the "Flinstones" drive-in scene trailer credits)

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2009 ML350 (106K) - Family vehicle
2001 CLK430 Cabriolet (80K) - Wife's car
2005 BMW 645CI (138K) - My daily driver
2016 Mustang (32K) - Daughter's car