Laser Powered Engine

The Laser Powered Motor:
For this project I am combining two technologies that are not my own.
I came up with this idea after watching a video on you tube of a laser powered elevator that will soon enable us to travel to outer space with out the use of costly chemical fuels. In the video a man focuses a high powered laser made of infrared light on to a parabolic cone shaped mirror. The light emitting from the laser condenses on the outer edges of the cone and a quick explosion occurs sending the shape flying upward toward the sky. The scientist in the video said the problem they were having with this technology was stabilizing the air craft. I thought, "what if instead of using this technology to power an air craft we use this energy in a centrifugal force to power a crank shaft in an automobile". The scientist said that this form of energy is extremely efficient when compared to a chemical fueled engine and it could be much lighter weight because of the lack of a need to carry fuel. This is ideal for land travel as well.
The next stage to this project was how to power this laser. After a little research I found that students in Japan are developing a solar powered laser. Their intention for the laser is to blast magnesium with it and create a large source of energy from it. The problem with this is that it is not renewable and still produces a waist product.
However, if you combine these two ideas you have a perpetual renewable source of energy. I have placed a diagram below to give some idea about how this machine would work.
The outer diameter of the fly wheel would be studded with parabolic shapes that a laser would shine into and produce propulsion much like the craft in the YouTube video. The laser beam can be broken up by mirrors to produce more that one beam that can activate more than one parabola shape on the fly wheel at a time like the cylinders on a combustion engine. The laser would be powered by a solar collector much like the one they are developing in Tokyo Japan.
Here is another version of my idea modifying a modern combustion engine by fitting the pistons with a parabolic shape and using a infrared laser to ignite the air around it to force the piston down.

References:
Here is a link to the article I refer to from MIT's website http://www.technologyreview.com/news/408698/solar-powered-laser/
Here is a link to the YouTube video I saw http://youtu.be/LAdj6vpYppA