The first tries to replace horses by a driving strength date from the XVIIth century. The vapor appeared to be the most promising solution but it is only at the end of the XVIIIth century when it had a real success. The vehicle creates by Cugnot was put on sale in 1770. However, it had one limited use. Afterward, other steam less practical vehicles, any time, were built by French, American and British engineers, among whom William Murdoch, James Watt and William Symington
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