The top speed of the Model T was 42 mph (68 km/h), but most roads of the time were meant for far slower animal drawn carriages.
The primary danger was plate glass windows shredding the occupants, or the gearbox bushing failing (Fords early transmission designs were interesting.) =3
Airbags weren't invented until many decades after the Model T. And cars were already exceeding 100mph by the 20s. Airbags remained a premium, nonrequired feature until the 90s iirc.
