Batman "4D" Coaster coming to Six Flags Texas
 

Looks like they can only run one car at at time. That's going to make for long lines.

If you're basing that on the fact that the animation only shows 1 vehicle at a time - then are you also assuming there will be no loading station and riders will just have to find their own way into their seats?

Not so much that, more the length of the track. Even of you have one car running the track, one car loading and one car staging it still looks like a low capacity ride. Still better than that giant water slide thingy, or the Frozen meet&greet I suppose.

That is interesting, but is it really "4D" compared to some other coasters I've seen? Anyway, I'd spill my churros on a ride like that, so no thank you. ;)

Happens in space and takes place over time. Seems to have all the Ds covered in a way no other roller coaster does.

Wouldn't the fact that there are no turns take away one of the Ds?

That makes since to me....

Looks like a combo of X2 and Green Lantern at Magic Mountain.