Bet it slices through the tight stuff but doesn't handle or brake well. Oh, and it's a circular saw...not chain.
1971 Husqvarna 400, a hugely successful bike in motocross during its time, this example just happens to be the exact bike that Malcolm Smith rode in the final scene of "Any Given Sunday" alongside Steve McQueen and Mert Lawwill.
check this vid... http://www.enduro21.com/index.php/component/k2/item/2285-friday-fail-–-gone-swimming