Allow (18)passengers in a vehicle view/listen to music/play games simultaneously?

Hi all, i have a challenge!! can anyone suggest the best possible method of setting up an entertainment that can allow (18)passengers in a vehicle view/listen to music/play games simultaneously??? What kind of equipment can achieve this or can you kindly suggest sites i can turn to for answers on both hard/software requirement for this type of equipment.kindly mail me if you can help aik2003@yahoo.com.

Hi and Welcome!

you might contact the people at http://www.theamazingfunbus.com/

Feel free to contact us to discuss costs, time line, equipment and vehicles that can be converted into a similar design and specifications.