Duesenberg, DOHC engines late 1920s, early 1930s… the Duesenberg brothers were German immigrants. 
Ohyeah, 'merica can this stuff with hi-tech… 
haha you guys are lots of fun
[quote=“Killrob”]Better even with all the racing stuff (dragsters, etc.), as soon as someone used DOHC and thus pwned the pushrod competition, that tech was banned right away 
because pushrod is 'MURICA! and no one shall take our freedom*!
[size=50]*except for your own government that has become the very thing your founding fathers wanted to protect you from : ([/size][/quote]
QFT!