Jack Doohan admits that he felt "scared" following in his Dad, Mick Doohan's, footsteps in racing on two wheels instead of four.
Mick Doohan is a successful 500cc World Championship champion, winning five consecutive championships between 1994 and 1998.
The Australian is part of the Alpine Academy and is currently racing in the F1 feeder series Formula 2. But his career in motorsport initially started off on motorbikes, before an accident changed his perspective.
"I think that he [Mick] must have been dropped on his head as a baby because it's another breed!" he said to media, including RacingNews365.com.
"I did like two wheels from my first memories [of racing] that I can think of, and that's all I wanted to do. Then I broke my left leg when I was five on my birthday.
"I had a few mates over that were riding dirt bikes and I just got t-boned, unluckily, and I got a bit scared of the bike [after that]."
Doohan admits that he was "way too big" to be a bike rider, having previously done BMX riding in-between his days karting.
"I've been karting since I was three, but I used to run out of fuel at the top of the track and get scared because I didn't know where my parents were!"
"So for two years I went to pump track BMX and then I went on to four-wheelers at the age of seven.
"I'm kind of grateful for that, because I'm way too big and wide to be a bike rider.
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Doohan: Dad would've supported me in either direction
Doohan says his Dad would have supported him in "either direction" should he have chosen to race on bikes, but it was a friend at school that got him hooked on racing four wheels.
"He would have supported me either direction. It was one of my buddies at school that started go-karting, I think he brought his car around our track to go around.
"I was at that age where it's cool to be doing what your friends are doing. And I was like 'Oh, I might I might give this another crack now.'"