I have, in the flesh ,rite up to it checking it out. It was at the bike HA bike show in saskatoon last yr.(cyclemania), it was cool, the guy fired it up a couple times.
Its wicked how the 2x2 works.
I know a guy who has one, a real giggle. Fill the tires with some water and watch the quads and SxS's crash trying to follow him up a hill! Sometimes slow and steady does win the race.:d
my wifes grandpa had one..... one summer i got it runnin and took her out.... it was slow and took a bit to get goin... the only thing i didn't like about it was in water if the front tire wanted to roll the bike on its side.. i/e like a log in the water... but to go over dry logs and anything else was like nothing else
i owned 2 a "67" and "70" ,,, they will go anywhere ,,, but they will beat the snot out of you ,,,, I sold both to a guy i know and he broke both arms when he rolled it on a hill