This is, obviously, ridiculous, but it was built mostly to check that the shortest possible hydraulic launch would still work. I changed the minimum length from 3 to 2 tiles to simplify the implementation.
There is actually a problem though if you use longer trains than this, if the train hasn’t left the station when the catch car disconnects, it thinks it’s arriving back in the station and will proceed round the layout at slow speed.
My son has just started riding roller coasters this year so I’ve been on a few “kid” coasters with him. I think this looks a lotta fun if it were real. Awesome job!