During his presentation, Murphy showed images of his first car, a blue Datsun, after he lost control and crashed it into a tree. Murphy was 19, had earlier been drinking and was driving passengers after a party.
Seeing his front-seat passenger and girlfriend at the time scream with her mouth open and no sound coming out is something Murphy said he would never forget. He said it was his "least proud moment in his life" and it was extremely lucky the accident didn't claim the girl's life. He was charged with careless use of a motor vehicle following the accident.
Driver inexperience, inattention and poor judgement were some of the topics Murphy covered in his presentation. He hoped his story would prevent other young drivers from making the same mistakes he did.
He said some people might argue that going round and round a race track as fast as you can was dangerous, but in a Super Car, drivers wore safety gear, helmets and neck devices, were in special seats and were prepared for high-speed crashes. He said he would rather crash at high speed in his Super Car than at 50km/h on New Zealand roads.
"We prepare [for crashes] that's what we do but on the open road we are not prepared ... and at 50 km/h it can be a pretty traumatic experience.''
Murphy praised the recent changes to the motoring legislation, which included increasing the driving age to 16 and having a zero-tolerance alcohol limit for people under 20 years.
He said recent statistics showed the death toll had decreased but the injury rate hadn't changed so there was more that could be done to reduce the harm caused on roads.
This could be done by making it compulsory for all young drivers to have professional driver training while learning instead of it being optional, as it currently stands.
He said many young drivers learned from their parents and often picked up bad habits, which were very hard to fix.
Greg Murphy's top driving tips
Keep practising your driving skills.
Ensure your car is safe to drive.
Stay away from dodgy modifications.
Don't drive under the influence of alcohol or drugs.
Do not be distracted while driving.
Always have a good peripheral vision and be aware of what's around you.
Make sure your tyres are not bald.
Obey the road rules and drive to the conditions.