I'm sure we'll see some sort of 4d come out from some manufacturer in the future, getting around patents isn't going to be THAT hard. I think B&M will be looking for a new concept sometime within the next 5 years at least. Their orders for floorless coasters have seemed to have lost somewhat of their novelty appeal so we're seeing parks buying dive machines and inverted coasters again.
I'm sure B&M would see more sales increases for the floorless if their biggest customer(SFI) would just decide to give them to some more parks.....or have they already given them to the parks they deem "worthy" yet?
Anyone get a look at some of those prototype trains based on the flying dutchman yet? one of them looked a helluva lot like the final design vekoma ultimately used,just without the recline system so getting in & out of the train would not be easy.
SF doesn't give its parks floorless coasters, SF buys its parks floorless coasters. B&M's most recent 2 floorless coasters have gone to non-SF parks (Tivoli & Dorney). They'll be fine. B&M also still has plenty of flying coasters to sell.
Drift- I've been saying that for a while that Intamin has somewhat of a head start on a 4D concept, as their box track already has the 4 corners for 4 rails. Time will tell I guess. I, for one, would love to see more 4Ds out there. X was the only coaster that I got off of and said "What the hell just happened?"... Rockets are a rush, but X was mystifying...
Using Intamin's Track for a 4-D would be difficult. Not making the track work but the supports would be hard. Because the "Xrails" carrier would get in the way of having any horizontal supports. So the Track would have to be suspended all the time which could be a problem. But I am sure they could find a way around it.