The two cycle internal combustion engines can become widely used in the automotive market, if two main goals were achieved:
- Maintain its original simplicity
- Eliminate the pollution inherent to the concept

Patent filed at the USPTO: 5,403,164 (Sep. 14,1993) and Brasil: PI9203733
This patent is today under public domain, but is still a good alternative for regular two cycle engines. There is a working prototype. There are videos of it and here is one made in Vitoria Science fair (Brasil) in 2009:

https://www.youtube.com/watch?v=j1ZOssE1X1M

Based on the working prototype the proposition is to make a complete finished one..
Computer aided design and modeling software can help to achieve faster and better results. CNC machinery can produce the first unit. Some stock parts can help.