Yes, any link?
Looks like the front pontoons to a float bridge. Those would hold almost anything on this site. It's been done before, a trailer that holds deflated pontoons that become the boat and you drive on and off. Landing craft rig. Jack's Plastic Welding is a good source for custom amas/pontoons.
Or, guess you could get that Great Seal stuff and paint the bottom of your vehicle and hang an outboard on it like they do in the commercial....LOL