<p>Jay Leno is a self-taught mechanic, not engineer.</p>
<p>As for self-learning engineering, you can do it. [Free</a> Online MIT Course Materials | Mechanical Engineering | MIT OpenCourseWare](<a href=“http://ocw.mit.edu/OcwWeb/Mechanical-Engineering/index.htm]Free”>http://ocw.mit.edu/OcwWeb/Mechanical-Engineering/index.htm)</p>