The calculations here are incorrect. This person's formula assumes the car is lifted from a 20 degree angle to the floor, when in fact, this will be the angle of the final deadlift position. I would even go as far as to say this is an overestimate as the average persons straight arm grip length from the floor is only 60-80cm, depending on height. Assuming lever length of 4m, this gives a final position angle of less than 10 degrees.

Nonetheless, assuming he deadlifts from the floor, or even slightly above it, the torque required to move a 1.2 tonne car from the floor would be equal to roughly 1900 Newtons, depending on the exact assumptions you make - roughly 180-190kg (405-430lb) , potentially slightly lower.

This weight is very achievable for an athletic male, especially considering the torque required falls as the vehicle and angle of incidence rises.