I don't post here that much, but I see you guys are having trouble so I'll show you how I did it.
I downloaded Firefox, and went to the download. I had the cutting out problem. But whenever it cut out, I deleted the "completed" file from my HD, removed it from the download list in the browser, and started again fresh. It goes up and up each time, and eventually I reached all 170mb.
It's odd, but it seemed to work...
EDIT: Now I've had some time to check it out, I'll give my two cents on things!
The models are exquisite. No doubt I'll be in one of 'em come season two of RORMJ. Grave Digger and Max D look like toys, but that is the developers' fault, not liquidfire's! I like how the chrome Digger is actual chrome, that's a nice touch.
There is a bug, though - after some freestyling and hard landings, the camera starts going all woozy. This is a known bug within RoR, and it is caused by detaching parts. I see no parts detaching on the truck, but perhaps there's something invisible coming loose? I don't know, but the trucks are very prone to this. That's my only gripe.
Other than that, these are absolutely exquisite, and have increased RoR's inventory of Monster Jam trucks tenfold. Love it!