True, if it's one of the lines going to Manchester Piccadilly, then the trains will be pretty frequent. On the line going from Man Pic to Stockport, there seems to be one a minute in the morning, from little local trains to 120mph Pendelinos. What if the barriers had come back down, trapping the car in the crossing? Potential consequences?
IMHO credit to the OP. He'd gone to the cops, reported something selfish. It's up to the cops to press charges not the OP. If the CPS decide not to take on the case at the 11th hour, that's how our justice system works, which is very frustrating! If the OP wanted to be a crusading helmet camera cyclist, he'd have made the video public long before now, but he hadn't.