"The only B&M 'Sitdown' coaster with 7-car trains" is, I'm guessing, what you meant? There's a lot of inverts with 7.
Anyway, I thought it looked like the trains in that design / patent were the Decepticoaster trains Universal have in Beijing, but with OTSRs. The ones in Beijing already have headlights, and look much better than the old style trains. Although it's vests on Decipticoaster rather than traditional OTSRs shown in this patent.
Then I noticed the zero car, or lack of one. What's going on there then?