Afterwards he was left with the rolling chassis and the floor plan, so he strengthen that with extra steal just to make sure it was sufficiently rigid so there would be no tilts in the fiberglass body. What is interesting is that for this car, Paul was using only recycling and household materials, such as foam, which helped him to sculpt the shape of the car. Finally, he covered everything in fiberglass and then smoothed it all out to the car the owner has now.
In the video itself, Paul thoroughly explains his work, so if you want the details, just click on the video below and enjoy his Cosmotron presentation.