Need to do another test but last time I tried to max out on the trainer I hit 190ish from memory.
My resting HR is ~44. I also got low BP, can be good fun falling over when you really want to stand up

If I do the same route 3-4 times a week, maybe I just try and hammer 1 of them.
I did a race simulation on my own last year and had avg HR ~165, raced that weekend and avg HR was 175. In simu it felt like I was pushing as hard as I could...looks like I need a rabbit too!