DESIGN : 1-SOURCE TO PRODUCT SOUND (CASSETTE, COMPUTER OR SLIDE ) 2-AMPLIFY ONE SOUND UNIT DOOM BY AMPLIFIER OR EQUALIZER. 3-PASS IT THROUGH A CONVERTER TO CHANGE THE NUMBER OF DOOMS (SPEED). 4-PASS IT THROUGH SPEAKER. 5-THE COMPRESSED AIR FROM SOUND AND SPEAKER MEMBRANE WILL GO TO CYLINDRICAL ROOM IT’S DIAMETER IS THE SAME AS THE SPEAKER. 6-COMPRESSED AIR WILL PUSH SPRINGS AT THE END OF CYLINDRICAL ROOM 7-THE SPRING WILL RECIPROCATE AN RAM. 8-THE RAM WILL TRANSFER THE ,OTION TO A GEAR BOX. 9-GEAR BOX WILL GIVE MOTION TO THE TRANSMISSION OF THE CAR. 10-REVERSE MOTION AND SPEED CAN BE CONTROLLED BY CONVERTER.BY THIS DESGIN WE CAN PRODUCE MECHANICLE AND ELECTRICAL POWER AS REQUIRED