Концепты и прототипы Holt

Holt Prototype #77 '1904

Holt Prototype #77 '1904
 
 
 

The first steam-powered track-type tractor.

Holt gasoline-powered tractor prototype '1906

Holt gasoline-powered tractor prototype, Бенджамин Холт
 
 
 

AutoWP.ru '2005–н.в.