Space amusement park ride.

Take a 500 ft tall tower that is mounted on 4 wheels guided by a track. Possibly convert one of those heavy capacity rail cars. It would be supported by a large arm so it does not tip over. Hundreds of thousands of gallons of water stored to the top of the tower. Let the tower fall to one side and the base will move (increasing speed) because of the arm that guides it. Now at the other end have a gigantic hydralic cylinder that takes all that force of the collapsing tower and channels it behind a 2 man space craft. The base would have a large hydralic ram that woule be 100' long. Tower dimensions would be 100' by 50' at the base and 500' tall. With a large tank at the top. Space craft would be a small 2 seater with basic life support systems. You know those old toys that had a little ship at one end and a large air foot pump at the other. You would jump on the pump and the little ship would go up mabye 30', this is a much larger version. The whold structure would be built next to a waterfall. Sunken into the earth as neccesary so that you would not have to waste any energy pumping water. The water fall would also provide, through generators, all the neccesary electrical power.