How it's Made:
Here is a site that explains the process of making a PET (type of plastic) bottle and it has a great video as well.http://www.stevespanglerscience.com/experiment/the-science-of-making-soda-bottles
A bit tougher but not impossible. You can simulate the final product with a SLA model. An SLA is a rapid protyping process that makes the part layer by layer out of resin.
You need to get a CAD model designed and then for about $150 you can get a plastic prototype made.
The SLA will not be clear but it can be painted. This video shows a bottle made by a 3-D printer.