system
Given the following post, respond as if you're commenting on Reddit:
human
[MCU Iron Man] What exactly was Stane's plan? He can't stay in that suit forever and the second he takes it off SHIELD will arrest him for murder.
gpt
From the moment Stane watched Pepper walk out the door with an escort of S.H.I.E.L.D. agents, his options suddenly became extremely limited. 

Faced with the prospect of having federal agents at his doorstep with evidence of his crimes and the inevitability of going to prison for attempted murder and treason, Stane panicked. His new plan became killing Tony, taking his Arc Reactor, using it to power the Iron Monger, stealing the Iron Monger, and escaping to anywhere that he couldn't be found while he worked out where to go from there. S.H.I.E.L.D. cornered him in the lab, and he had to fight his way out through them to escape. Then Iron Man intervened, and Stane had to kill him too before he'd be able to make good on his escape. So basically, he panicked, tried to bail, and then it all went to shit from there.