I wouldn't worry about it.. I went through al kinds of potentally hazardous vehicular experiences and I survived.
My dad used to take me on rides on the back of his motorcycle, when I was like 8.. then my older brother got a dirt bike and I used to ride it around. Once when I was pretty young maybe 5 or 6.. I barely remember.. I was riding in the back seat of my parents caddy, and my dad was picking someone up (my grandpa maybe?) from the airport and on the way back I wanted to join them.. so I crawled over into the front seat, and somehow in the process, knocked the gearshift from D to 1 (on the freeway). I never heard a car make that much noise, I thought I was going to die.

I was rapidly thrust to the floor, as we went from like 60 mph to something more like 35. But the car survived, and so did I.
By today's standards, a 914 might seem dangerous, but by 1980 standards it's plenty safe.

At least you have a roll bar.